436 . The ratio of two numbers is 7:4, if 8 is added to both the number ration becomes 13:8 what is the smaller number?

A. 40
B. 56
C. 38
D. 52

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Answer: Option A

Explanation:

Let's 7x and 4x be two number.

Now, 7x + 8:4x + 8 = 13:8

Or, 52x + 104 = 56x + 64

Or, 56x - 52x = 104 - 64

Or, 4x = 40

Or, x = 10

So small number is 4x = 4×10 = 40

Or, x

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Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. 78
B. 80
C. 91
D. 114

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Answer: Option A

Explanation:

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জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা-(NSI) Assistant Director- Research officer &amp- Assistant Programmer-০৮/১০/২০২১

A. 10
B. 12
C. 15
D. 8
E. 9

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Answer: Option A

Explanation:

Hints: এই গণিতটি করতে প্রথম থেকে rent add করে যেতে হবে এবং কখন 1300। হয় তা দেখতে হবে।

অথবা, option এর পাঁচটি উত্তর ব্যবহার করে দেখতে হবে।

যদি, 10। দিন চিন্তা করি, খরচ = 50 + 50 × 3 + 100 × 5 + 300 × 2 = 1300

তাহলে প্রথমটি সঠিক উত্তর

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439 . The respective ratio between the speed of a car , a train , and a bus is 5 : 9 : 4 . The average speed of the car, bus and train is 72 km / hr together . what is the average speed of the car and the train together?

A. 82 km /hr
B. 72 km / hr
C. 67 kms /er
D. 84 km / hr

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Answer: Option D

Explanation:

Let the speeds of the car, train and bus be 5x, 9x and 4x km/hr respectively.
Average speed = (5x + 9x + 4x)/3 = 18x /3 = 6x km/hr.
Also, 6x = 72 = > x = 12 km/hr
Therefore, the average speed of the car and train together is = ( 5x + 9x)/2 = 7x = 7 x 12 = 84 km/hr.

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Sonali- Rupali- Bangladesh Krishi- Rajshahi krishi unnayn-Investment Corporation of Bangladesh | 30.11.2018

A. 82
B. 72
C. 67
D. 84

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Answer: Option D

Explanation:

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Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. 32.2%
B. 12.1%
C. 33.3%
D. 48.3%
E. None of them

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Answer: Option C

Explanation:

20 - 15 = 5 item
So,the percentage profit earned is 5/15x100 = 33.3%

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Bangladesh Bank - Assistant Director - 2012

A. 20%
B. 15%
C. 10%
D. 12%
E. 25%

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Answer: Option E

Explanation:

purchase unit 10- selling 8= profit unit 2

2/8*100=25%.

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Bangladesh Bank - Assistant Director - 2008

A. Tk. 240
B. Tk. 220
C. Tk. 200
D. Tk. 250

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Answer: Option C

Explanation:

Equivalent Discount,
= (A + B) - AB/100
= (10 + 5) - (10 × 5)/100
= 14.5%

Let MP = X
Now,
X - 14.5% of X = 171(Selling Price)
0.855X = 171
X = 200
Hence, MP = Tk. 200
Going through options,
200(MP) = = 10%(disc.) ⇒ 180 = = 5%(disc.) ⇒ 171(CP)

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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. -5 < x < 7/4
B. x ≤ -5 and x ≥ 7/4
C. -7/4 < x < 5
D. x > 5 and x < -7/4
E. None of these

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Answer: Option E

Explanation:

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445 . The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child ?

A. 3
B. 4
C. 5
D. 6
E. None of them

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Answer: Option B

Explanation:

Let the age of the youngest child be x years
Then x+(x+3)+(x+6)+(x+9)+(x+12)=50
⇒5x+30=50⇒5x=20⇒x=4
∴ Age of the youngest child is 4 years.

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Bangladesh Bank - Assistant Director - 2012

A. 4 years
B. 8 years
C. 9 years
D. None of these

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Answer: Option A

Explanation:

Let the ages of Kunal and Sugar 6 years ago be 6x and 5x years respectively.
Then, {(6x + 6) + 4}/{(5x + 6) + 4} = 11/10
⇒10(6x + 10) = 11(5x + 10)
⇒5x = 10
⇒x = 1
∴ Sagar's present age = (5x + 6) = 16 years.

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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 16
B. 17
C. 18
D. 32

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Answer: Option A

Explanation:

(x-y)²=16

x²+y²=48

Now,

x²+y²=(x-y)²+2xy

Or,(48-16)/2=xy

Or, xy=16

(ans)

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448 . The sum of the digits of two -digit number is 10, while when the digits are reversed , the number decrease by 54. Find the changed number .

A. 19
B. 46
C. 37
D. 28

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Answer: Option D

Explanation:

Let the original number is 82 i.e 8 + 2 = 10 and when the digits are reversed i.e 28 The difference is 82 - 28 = 54 i.e, the number is decreased by 54.

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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 1
B. 2
C. 3
D. 4
E. None of them

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Answer: Option C

Explanation:

ATQ,
x + y = 5......(i) ,
xy = 4
So, x - y = 3 .....(ii)
We get from (i) + (ii) -
2x = 8
or, x = 5
So, y = 1
Now, x - y = 4 - 1 = 3

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Bangladesh Bank - Assistant Director - 2012

A. 12, 5
B. 13, 4
C. 14, 3
D. 24, 10

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Answer: Option A

Explanation:

Hints: এই ম্যথটি করলে উত্তর দেখে করলে দ্রুত হয়। প্রশ্নমতে দুইটি সংখ্যাকে যোগ করে বড় সংখ্যা দিয়ে গুন করলে 204 হয়। প্রথম উত্তর দিয়ে = (12 + 5) × 12 = 204 মিলে গেছে। বাকি গুলা যদি না মেলে তাহলে এাটই উত্তর।

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436 . The ratio of two numbers is 7:4, if 8 is added to both the number ration becomes 13:8 what is the smaller number?

437 . The ration of male student of female students ina class is 13 t0 19. If there are 224 people in the class, including one teacher. One administrator and thirty evaluations. How many people in the class are male students?

438 . The rent of a guest house was Tk. 50 per day for first three days, Tk. 100 per day for the next 5 days and Tk. 300 per day for other days. The registration fee in the beginning is Tk. 50. If one has to pay Tk. 1300, for how many days he availed of this facility?

439 . The respective ratio between the speed of a car , a train , and a bus is 5 : 9 : 4 . The average speed of the car, bus and train is 72 km / hr together . what is the average speed of the car and the train together?

440 . The respective ratio between the speed of a speed of the car, bus and train is 72 km/hr together. What is the average speed (km/h)of the car and the train together?

441 . The selling price of 15 items equals the cost of 20 items. What is the percentage profit earned by the seller ?

442 . The selling price of 8 apples is equal to the purchase price of 10 apples? What is the profit margin?

443 . The selling price of an article after giving two successive discounts of 10% and 5% on the marked price is TK. 171 . What is the marked price ?

444 . The solution set of the inequality (2x + 1) < 9(4 - x) is--

445 . The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child ?

Let the age of the youngest child be x years
Then x+(x+3)+(x+6)+(x+9)+(x+12)=50
⇒5x+30=50⇒5x=20⇒x=4
∴ Age of the youngest child is 4 years.

446 . The sum of ages of 5 children born at the intervals of three years each is 50 years what is the age of the youngest child?

447 . The sum of square of two numbers is 48 and the square of their diffrence is 16. The prodduct of the two number is-

448 . The sum of the digits of two -digit number is 10, while when the digits are reversed , the number decrease by 54. Find the changed number .

449 . The sum of two numbers is 5. And their product is 4 Then what is the difference between the numbers ?

450 . The sum of two positive integers multiplied by the bigger number is 204, and their difference multiplied by the smaller number is 35. The numbers are:

কোর্স ক্যাটাগরি

প্রয়োজনীয় লিঙ্ক

436 . The ratio of two numbers is 7:4, if 8 is added to both the number ration becomes 13:8 what is the smaller number?

437 . The ration of male student of female students ina class is 13 t0 19. If there are 224 people in the class, including one teacher. One administrator and thirty evaluations. How many people in the class are male students?

438 . The rent of a guest house was Tk. 50 per day for first three days, Tk. 100 per day for the next 5 days and Tk. 300 per day for other days. The registration fee in the beginning is Tk. 50. If one has to pay Tk. 1300, for how many days he availed of this facility?

439 . The respective ratio between the speed of a car , a train , and a bus is 5 : 9 : 4 . The average speed of the car, bus and train is 72 km / hr together . what is the average speed of the car and the train together?

440 . The respective ratio between the speed of a speed of the car, bus and train is 72 km/hr together. What is the average speed (km/h)of the car and the train together?

441 . The selling price of 15 items equals the cost of 20 items. What is the percentage profit earned by the seller ?

442 . The selling price of 8 apples is equal to the purchase price of 10 apples? What is the profit margin?

443 . The selling price of an article after giving two successive discounts of 10% and 5% on the marked price is TK. 171 . What is the marked price ?

444 . The solution set of the inequality (2x + 1) < 9(4 - x) is--

445 . The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child ?

Let the age of the youngest child be x years Then x+(x+3)+(x+6)+(x+9)+(x+12)=50 ⇒5x+30=50⇒5x=20⇒x=4 ∴ Age of the youngest child is 4 years.

446 . The sum of ages of 5 children born at the intervals of three years each is 50 years what is the age of the youngest child?

447 . The sum of square of two numbers is 48 and the square of their diffrence is 16. The prodduct of the two number is-

448 . The sum of the digits of two -digit number is 10, while when the digits are reversed , the number decrease by 54. Find the changed number .

449 . The sum of two numbers is 5. And their product is 4 Then what is the difference between the numbers ?

450 . The sum of two positive integers multiplied by the bigger number is 204, and their difference multiplied by the smaller number is 35. The numbers are:

Let the age of the youngest child be x years
Then x+(x+3)+(x+6)+(x+9)+(x+12)=50
⇒5x+30=50⇒5x=20⇒x=4
∴ Age of the youngest child is 4 years.