331 . r>s>0; Quantity A = rs/r and Quantity B = rs/s

A. Quantity in A is greater
B. Quantity in B is greater
C. The two quantities are equal
D. The relationship indetermine
E. None of these

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Answer: Option B

Explanation:

A = rs/r = s

B = rs/s = r

332 . Rahim average 70 in his first m number of exams. After taking n more exams he had an overall average of 75. In terms of m and n his average for the last n exams was—

A. 5n/m + 75
B. (70m + 75n)/(m + n)
C. 80
D. (5m + 75)/n
E. 5m/n + 75

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Answer: Option E

Explanation:

333 . Rahim can now 16 km/hr in still water. It takes her thrice as long to row up as to row down the river. Find the difference between her speed (km/hr) in still water and that of the steam.

A. 8
B. 16
C. 24
D. 12

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Answer: Option A

Explanation:

Let, the speed of Stream = x

,so, downstream speed = 16+x and upstream speed = 16-x

ATQ,

16+x = 3(16-x)

Or, 16+x = 48 -3x

Or, 4x = 32

Or, x =8

So speed of stream = 8 and difference of speed of still water & stream = 16–8 = 8km/hr

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

A. 4
B. 6
C. 9
D. 15

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Answer: Option D

Explanation:

335 . Riaz spent 20% of his income on taxes and 20% of the remainder on rent . What percent of his income has he spent on rent ?

A. 12
B. 14
C. 16
D. 18
E. 15

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Answer: Option C

Explanation:

Lets,

Riaz income = 100 tk

If he give tax 20% of his income then = 100×20%

= 100× 20/100

= 20 tk

Remain Riaz income = (100 - 20)tk

= 80 tk

Then he spent 20% of his remaining income then

= 80×20%

= 80×20/100

= 16 tk

% of Riaz income = (16×100)/100

= 16%

Bangladesh Bank - Assistant Director - 2011

A. 3:2
B. 4:3
C. 2:6
D. 8:12
E. None of them

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Answer: Option B

Explanation:

(8:54 - 8:30) = 24
Robi's cars = 24/3 = 8
Sashi's cars = 24/4 = 6
Ratio = 8:6 = 4:3

Bangladesh Bank - Assistant Director - 2012

A. Tk.2000
B. Tk.1200
C. Tk.1500
D. Tk.2500
E. None of these

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Answer: Option C

Explanation:

ধরি, মোট টাকার পরিমাণ x

আনুপাতিক রাশিগুলোর যোগফল = 2 + 3 + 7 = 12

সাইফের অংশ = x এর 2/12

= x/6

ডা. নাজমার অংশ = x এর 3/12

= x/4

শাকিলের অংশ = x এর 7/12

= 7x/12

প্রশ্নমতে, 7x/12 - ( x/6 + x/4) = 1500

= > 7x/12 - 5x/12 = 1500

= > 2x/12 = 1500

= > x/6 = 1500

= > x = 9000

মোট টাকার পরিমাণ 9000 টাকা৷

সাইফের অংশ = x/6 = 9000/6 = 1500 টাকা (উওর

338 . Seven (7) is 5% of which number?

A. 128
B. 156
C. 140
D. 135

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Answer: Option C

Explanation:

339 . Six men can complete a work in 5 days if they work for 8 hours per day. How many days will 4 men take to do the same work if they work only 5 hours per day?

A. 12
B. 16
C. 24
D. 32
E. none of these

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Answer: Option A

Explanation:

6 men if works 8 hours /day need 5 days

4 men if works 5 hours/day need = ( 5×6×8)/ 4×5 = 12 days

340 . Six years ago, the ratio of ages of Kunal and Sagars was 6 : 5. Four years hence, the ratio of their ages will be 11 : 10. what is Sagar's age at present ?

A. 18 years
B. 20 years
C. 16 years
D. 22 years

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Answer: Option C

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.

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

A. 6 h
B. 2 h
C. 8 h
D. 10 h
E. 12 h

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Answer: Option E

Explanation:

342 . Square of a number plus two times the number equal 63. What is the number ?

A. 7
B. 9
C. -9
D. 7 or -9
E. 8

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Answer: Option D

Explanation:

Let the number be x.

Then, x^2 + 2x = 63 [according to the question]

or, x^2 + 2x - 63 = 0

or, x^2 + 9x - 7x - 63 = 0

or, (x + 9) (x - 7) = 0

Therefore, x = 7 or - 9.

Bangladesh Bank - Assistant Director - 2011

A. √7 kms
B. 5 kms
C. 8 kms
D. 2√3 kms
E. 25 kms

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Answer: Option B

Explanation:

344 . Successive discount of 25% and 20% are equal to a single discount of—

A. 40%
B. 35%
C. 32%
D. None of these

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Answer: Option A

Explanation:

345 . Sum of 4 consecutive even numbers is greater than consecutive odd numbers by 81. If the sum of the least odd and even numbers is 59 then find the sum of largest odd and even numbers.

A. 69
B. 53
C. 65
D. 72

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Answer: Option A

Explanation:

Let 4 consecutive even numbers be x, x + 2, X + 4 and x + 6 respectively.
3 consecutive odd numbers be y, y + 2 and y + 4
According to question,
[x + x + 2 + x + 4 + x + 6]−[y + y + 2 + y + 4] = 81
= > (4x + 12)−(3y + 6) = 81
4x−3y = 81−12 + 6
4x−3y = 75
x + 4 = 59
On solving equations (i) and (ii), we get
X = 36
y = 23
The sum of largest odd and even number = x + 6 + y + 4 = x + y + 10 = 36 + 23 + 10 = 69

Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

331 . r>s>0; Quantity A = rs/r and Quantity B = rs/s

332 . Rahim average 70 in his first m number of exams. After taking n more exams he had an overall average of 75. In terms of m and n his average for the last n exams was—

333 . Rahim can now 16 km/hr in still water. It takes her thrice as long to row up as to row down the river. Find the difference between her speed (km/hr) in still water and that of the steam.

334 . Rahim wants to cut a rectangular board into indentical square piece. If the board is 18 inched by 30 inches what is the least number of square pieces he can cut without wising any of the board?

335 . Riaz spent 20% of his income on taxes and 20% of the remainder on rent . What percent of his income has he spent on rent ?

336 . Robi takes 3 minutes to inspect a car , and Sashi takes 4 minutes to inspect a car . If they both start inspecting different cars at 8:30 AM, what would be the ratio of the number of cars inspected by Robi and Sashi by 8:54 AM of the same day ?

337 . Saif, Dr. Nazma and Shakil divided a sum of money among themselves in the ratio 2 : 3 : 7. Find the share of Saif if the total sare of Saif and Dr. Nazma together is Tk.1500 less than that of Shakil?

338 . Seven (7) is 5% of which number?

339 . Six men can complete a work in 5 days if they work for 8 hours per day. How many days will 4 men take to do the same work if they work only 5 hours per day?

340 . Six years ago, the ratio of ages of Kunal and Sagars was 6 : 5. Four years hence, the ratio of their ages will be 11 : 10. what is Sagar's age at present ?

341 . Speed of the boat in standing water is 6 km/h and the speed of the stream is 2 km/h. What will be the total time if a man goes by the boat upstream 32 km and comes back to the starting point?

342 . Square of a number plus two times the number equal 63. What is the number ?

343 . Starting from Town S, Mr. Ahsan drove straight East for 3 kms, then he turned left and drove straight North for 4 kms and stopped at Town T. What is the straight-line distance from Town S to Town T?

344 . Successive discount of 25% and 20% are equal to a single discount of—

345 . Sum of 4 consecutive even numbers is greater than consecutive odd numbers by 81. If the sum of the least odd and even numbers is 59 then find the sum of largest odd and even numbers.

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