2551 . Robin has 4 times as many marbles as Azad has and 5 times as many as Kalam has. If Kalam has more than 40 marbles, what is the least number of marbles Robin could have?

A. 200
B. 205
C. 210
D. 220
E. None of these

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Answer: Option D

Explanation:

let,

azad = a

robin = r

kalam = k

ATQ,

r = 4a = 5k

5k = 4a

k = 4a/5......i

again given k is more than 40

k>40

let k = 41

from equation... i

41 = 4a/5

a = 205/4 which is not integer

accordingly if k = 42, 43

a is not integer

but if k = 44

a = (44*5)/4

= 55

so minimum value of k is 44 for which minimum value of a is integer

r = 4a or r = 5k

r = 4*55 or r = 5*44

r = 220

ans: 220

2552 . Roman covers 17 kilometer in 5 hours. How much time does he need to cover 10.2 kilometer?

A. 2.5 hrs
B. 3.4 hrs
C. 3.5 hrs
D. 3 hrs

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Answer: Option D

Explanation:

He can cover 17 km in 5 hrs

So, He can cover 10.2 km in 5×10.2/17 hrs = 3 hrs

2553 . Root : Stem : Branch : ?

A. Wood
B. Leaf
C. Tree
D. Fertilizer

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Answer: Option B

Explanation:

As root caries stem of a tree, branch caries the leaf of a tree.

Bangladesh Bank - Assistant Director - 2016

A. Ana
B. Ruby
C. Pamela
D. Rony

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Answer: Option D

Explanation:

Explanation : Ruby's height = 5'2"

Ana is taller than Ruby e.g. Ana's height > 5'2"
or we can write Ana's height = 5'2" + x

but Ana is not taller than Pamela.

So, height of Pamela > 5'2" + x

Let Pamela's height = (5'2" + x) + y

Pamela is shorter than her cousin Rony.

So, Rony's height > (5'2" + x) + y

here it is clear that, Rony is tallest because his height is greater than (5'2" + x) + y.

Hence, option (B) is correct.

সমন্বিত ৮ ব্যাংক ও ১ টি আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (সাধারণ) (20-01-2023)

A. 30
B. 20
C. 25
D. 33

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Answer: Option A

Explanation:

Together the can finish 1/12 of the work in a day.

Rony alone can finish 1/20 of the work in a day.

Rumi alone can finish = 1/12 - 1/20 = (5 - 3)/60 = 1/30 of the work in a day.

So, Rumi alone can finish the work in 30 days.

2556 . Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes ?

A. 648
B. 1800
C. 2700
D. 10800

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Answer: Option B

Explanation:

Hints : 6 machines produce 270 bottles per minute

1 machine produce 270/6 bottles per minute

10 machines produce = 45 × 10 = 450 bottles per minute

In 4 minutes 10 machines produce = 450 × 4 bottles = 1800 bottles

2557 . Running at the same constant rate, 6 identical machines can produce a totoal of 270 bottles per minute. At this rat, how many bottles could 10 such machines produce in 4 minutes?

A. 648
B. 10800
C. 2700
D. 1800

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Answer: Option D

Explanation:

Hints : 270 × 10 × 4/ 6 = 1800

এই ধরনের গণিত গুলা কম সময়ে এভাবে করবেন।

2558 . Saif, Noman and Morshed divided a sum of money among thenselves in the ratio 2 : 3 : 7. Find the share of Saif if the total share of Saif and Noman together is Tk.1500 less than that of Morshed.

A. Tk.2000
B. Tk.1200
C. Tk.1500
D. Tk.2500

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Answer: Option C

Explanation:

Let their shares be 2x, 3x and 7x respectively.

ATQ, 7x - (2x + 3x) = 1500

or, 7x - 5x = 1500

or, 2x = 1500

So, share of Saif is 1500 TK.

2559 . Saif , Noman and Morshed divided a sum of money among themselves in the ratio 2: 3: 7 Find the share of Saif if the total share of saif and Noman together is Tk. 1,500 less than that of Morshed.

A. Tk. 2,000
B. Tk. 1,200
C. Tk. 1,500
D. Tk. 2,500
E. None of these

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Answer: Option C

Explanation:

Let their shares be 2x, 3x and 7x respectively.

ATQ, 7x - (2x + 3x) = 1500

or, 7x - 5x = 1500

or, 2x = 1500

So, share of Saif is 1500 TK.

2560 . Saif charges Tk.5.00 for every hour he works. Last week he worksd for 8 hours. He spent Tk. 12.00 of the money he earned. Which expression could he used to find how much he had left?

A. Tk.5.00 × 8 + Tk.12.00
B. Tk.5.00 × 8 - Tk.12.00
C. Tk.5.00/8 - Tk.12.00
D. (Tk.5.00 × 8)/ Tk.12.00

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Answer: Option B

Explanation:

remaining money = total money that he earned - money that he spent

= Tk 5.00*8 - Tk 12.00

2561 . Salam earns Tk. 8.50 per hour on days other than Friday and twice the rate on Friday. Last week he worked a total of 50 hours including 8 hours on Friday. What is his earning for the week?

A. Tk. 340
B. Tk. 398
C. Tk. 408
D. Tk. 493

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Answer: Option D

Explanation:

During the week, Salam worked a total of 50 - 8 = 42 hours at a rate of Tk. 8.50 per hour.
On Friday, he worked 8 hours at a rate of Tk. 8.50 × 2 = Tk. 17.00 per hour.

Total earnings for the week = 42 × 8.50 + 8 × 17 = TK. 493.

সমন্বিত ৮ ব্যাংক ও ১ টি আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (সাধারণ) (20-01-2023)

A. 100
B. 200
C. 300
D. 400

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Answer: Option B

Explanation:

2563 . Salim sells 900 shares via his brother who changes a frate rete of commission of TK. 20 cm all transmission of less thes TK. 1600. His bask account is credited with Tk. 340 from the share sale. What price were his shares sold at?

A. 12 cents
B. $7 cents
C. 60 cents
D. 40 cents

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Answer: Option D

Explanation:

Let's assume the price at which Salim's shares were sold is 'P' in Tk (Taka).

Salim's brother charges a flat rate of commission of Tk. 20 on all transactions of less than Tk. 1000. Since Salim's bank account was credited with Tk. 340 after selling the shares, we can set up the following equation:

Sale Price of Shares - Commission = Amount Credited

P * 900 - 20 = 340

Simplifying the equation:

900P - 20 = 340 900P = 340 + 20 900P = 360

Dividing both sides by 900: P = 360 / 900 P = Tk. 0.40

Therefore, the shares were sold at Tk. 0.40 each.

বাংলাদেশ অর্থনৈতিক অঞ্চল কর্তৃপক্ষ (BEZA) | সহকারী ব্যবস্থাপক | ৩০.১১.২০১৮

A. 100%
B. 94%
C. 84%
D. 96%

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Answer: Option A

Explanation:

the sum of the first 4 test scores is 4*80 = 320

the sum of ALL 5 scores to be 5*84 = 420

she need score in her fifth test = 420 - 320 = 100

2565 . Salma Average in 4 test in 80% what marks dose she needs to score in her fifth test to marks her avetage 84%

A. 100%
B. 94%
C. 84%
D. 96%

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Answer: Option A

Explanation:

the sum of the first 4 test scores is 4*80 = 320

the sum of ALL 5 scores to be 5*84 = 420

she need score in her fifth test = 420 - 320 = 100

2551 . Robin has 4 times as many marbles as Azad has and 5 times as many as Kalam has. If Kalam has more than 40 marbles, what is the least number of marbles Robin could have?

2552 . Roman covers 17 kilometer in 5 hours. How much time does he need to cover 10.2 kilometer?

2553 . Root : Stem : Branch : ?

2554 . Ruby's height is 5'2". Ana is taller than Ruby but she is not taller than Pamela. Pamela is shorter than her cousin Rony but she is not shorter than Ruby. Who is the tallest in the group?

2555 . Rumi and Rony can finish a task working together in 12 days. If Rony alone can finish that in 20 days, how many days will Rumi need to finish the task working alone?

2556 . Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes ?

2557 . Running at the same constant rate, 6 identical machines can produce a totoal of 270 bottles per minute. At this rat, how many bottles could 10 such machines produce in 4 minutes?

2558 . Saif, Noman and Morshed divided a sum of money among thenselves in the ratio 2 : 3 : 7. Find the share of Saif if the total share of Saif and Noman together is Tk.1500 less than that of Morshed.

2559 . Saif , Noman and Morshed divided a sum of money among themselves in the ratio 2: 3: 7 Find the share of Saif if the total share of saif and Noman together is Tk. 1,500 less than that of Morshed.

2560 . Saif charges Tk.5.00 for every hour he works. Last week he worksd for 8 hours. He spent Tk. 12.00 of the money he earned. Which expression could he used to find how much he had left?

2561 . Salam earns Tk. 8.50 per hour on days other than Friday and twice the rate on Friday. Last week he worked a total of 50 hours including 8 hours on Friday. What is his earning for the week?

2562 . Salaries of A, B and C are in the ratio 1 : 2 : 3. Salary of B and C togather is Tk.6000. By what percent is salary of C more than that of A?

2563 . Salim sells 900 shares via his brother who changes a frate rete of commission of TK. 20 cm all transmission of less thes TK. 1600. His bask account is credited with Tk. 340 from the share sale. What price were his shares sold at?

2564 . Salma's average in four tests is 80%. What mark does she need score in her fifth test to make her average 84%?

2565 . Salma Average in 4 test in 80% what marks dose she needs to score in her fifth test to marks her avetage 84%

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