871 . A man buys Tk. 50 shares in a company which pays 10% dividend. If the man gets 12.5% on his investment, at what price did he buy the shares?

A. Tk. 37.50
B. Tk. 40
C. Tk. 48
D. Tk. 52

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Answer: Option B

Explanation:

Hints: Dividend on 1 share = (50×10%) Tk

= 50 ×(10/100) = 5 Tk.

Tk. 12.5 is an income on an investment of Tk. 100

Tk. 5 is an income on an investment of Tk (100×5) / 12.5 = 40

872 . A man can cross 10 miles distance of a river in favor of the stream in 2 hours. He can come back against the stream along the same way in 5 hours. What is the average speed, in miles per hour, for the entire trip?

A. 20/7
B. 10/7
C. 7/10
D. 7/20

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Answer: Option A

Explanation:

Total distance = 10 + 10 = 20 miles

Total time required = 5 + 2 = 7 hours

Average speed = 20/7 miles per hour

873 . A man can do a job in 15 days. His father takes 20 days and his son finished it in 25 days. How long will they take to complete the job if they all work together?

A. Less than 6 days
B. Exactly 6 days
C. More than 10 days
D. Approximately 6.4 days

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Answer: Option D

Explanation:

Together in 1 day they can do

= ( 1/15 + 1/20 + 1/25) portion

= 47/300 portion

47/300 portion is done in 1 day

1 full portion dine in 300/47 day = 6.38297873 = 6.4

874 . A man can do a piece of work in 5 days. But with the help of his son, he can do it in 3 days . In what time can the son do it alone ?

A. 6.5 days
B. 7 days
C. 7.5 days
D. 8 days

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Answer: Option C

Explanation:

Man completes total work in 5 days, he will do one fifth of work in day and along with son will do one third of work in day. So son alone can complete the work in 7.5 days as explained below

Work done by man in a day : 1/5

Work done by man + son in a day : 1/3

Work done by son in a day : 1/3 - 1/5 = 2/15

Time take by son to complete work : 15/2 or 7.5 days

ans: 7.5 days

Bangladesh Bank - Assistant Director - 2014

A. 8 hours
B. 5 hours
C. 10 hours
D. 20 hours

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Answer: Option B

Explanation:

Downstream Speed = 10+6 => 16

Time taken to cover 80 Km = 80/16 => 5 hours

876 . A man can reach a certain place in 40 hours. If he reduces his speed by 1/15th, he goes 5km less in that time. Find the total distance covered by him.

A. 60km
B. 85km
C. 52km
D. 75km

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Answer: Option D

Explanation:

Let's say, time for 2nd train is x

So, d=40x

And,

d-5=40×(x-x/15)

Or, 40x-5=40×(x-x/15)

Or, x=1.87

So, distance=40×1.87=75km

(ans)

877 . A man can reach a certain place in 49 hours. If he reduces his speed by 1/15th , he goes 5 km less in that time. Find the total distance covered by him .

A. 60 km
B. 85 km
C. 75 km
D. 52 km

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Answer: Option C

Explanation:

Ratio of speed = 15: 14
Let, the speed be = 14x and 15 x
∴ 15x - 14x = 5
বা, x = 5
Total distance covered = 15 x
= 15 X 5
= 75 km

878 . A man can row 6 km/hr in still water. If the speed of the current is 2 km/hr, it takes 3 hrs more in upstream than in the downstream for the same distance. The distance is-

A. 30km
B. 24km
C. 20km
D. 32km

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Answer: Option B

Explanation:

D/(6 - 2) – D/(6 + 2) = 3
D = 24
Ans: B.

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

A. 2.4 km
B. 3 km
C. 4.5 km
D. 5 km
E. None of these

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Answer: Option D

Explanation:

880 . A man can row downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--

A. 2.5 km/hr
B. 5 km/hr
C. 7.5 km/hr
D. 15 km/hr

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Answer: Option C

Explanation:

Let the man's rowing rate and stream's flowing rate be U and V respectively.

So, U + V = 10

And, U - V = 5

- - - - - - - - - - - - - - - - - - - - - - -

U + U = 10 + 5 [By addition]

or, 2U = 15

So, U = 7.5 km/hr

881 . A man can row downstream at 14 km/h and upstream at 8 km/hr. What is the rate of the stream?

A. 22
B. 11
C. 6
D. 3

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Answer: Option D

Explanation:

882 . A man can row upstream at 10 km/h and downstream at 16 km/h. His rate in still water is---

A. 12
B. 26
C. 13
D. 6

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Answer: Option C

Explanation:

883 . A man can row upstream at 8 kmph and downstream at 13 kmph. The speed of the stream is :

A. 2.5 km/hr
B. 4.2 km/hr
C. 5 km/hr
D. 10.5 km/hr

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Answer: Option A

Explanation:

Speed of stream = 1/2 ( 13 - 8) km/hr = 2.5 km/hr

884 . A man can rows 6 km/hr in still water. When the river is running at 1.5 km/hr, it takes him 1.5 hour to row to a place and back. How far is the place?

A. 4.2 km
B. 9.5 km
C. 6 km
D. 5 km

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Answer: Option A

Explanation:

885 . A man deposits certain amount in his bank account. After a few days. he withdraws half of the money deposited and deposits Tk. 500 more. If he has a balance of Tk. 2000 in his bank account, find the amount deposited initially.

A. Tk. 1500
B. Tk. 2000
C. Tk. 2500
D. Tk. 3000

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Answer: Option D

Explanation:

x/2+500= 2000

=> x+1000= 4000

=> x= 4000-1000 =3000.

বাংলাদেশ ব্যাংক || অফিসার (ক্যাশ) (21-07-2023)

871 . A man buys Tk. 50 shares in a company which pays 10% dividend. If the man gets 12.5% on his investment, at what price did he buy the shares?

872 . A man can cross 10 miles distance of a river in favor of the stream in 2 hours. He can come back against the stream along the same way in 5 hours. What is the average speed, in miles per hour, for the entire trip?

873 . A man can do a job in 15 days. His father takes 20 days and his son finished it in 25 days. How long will they take to complete the job if they all work together?

874 . A man can do a piece of work in 5 days. But with the help of his son, he can do it in 3 days . In what time can the son do it alone ?

875 . A man can now a boat at 10 km/hr in still water. If the speed of the stream is 6 km/hr, the time taken to row a distance of 80 km downstream is:

876 . A man can reach a certain place in 40 hours. If he reduces his speed by 1/15th, he goes 5km less in that time. Find the total distance covered by him.

877 . A man can reach a certain place in 49 hours. If he reduces his speed by 1/15th , he goes 5 km less in that time. Find the total distance covered by him .

878 . A man can row 6 km/hr in still water. If the speed of the current is 2 km/hr, it takes 3 hrs more in upstream than in the downstream for the same distance. The distance is-

879 . a man can row at 5 km/hr in still water. If the velocity of the current is 1 km/hr and it takes him 1 hour to row to a place and come back, how far is the place?

880 . A man can row downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--

881 . A man can row downstream at 14 km/h and upstream at 8 km/hr. What is the rate of the stream?

882 . A man can row upstream at 10 km/h and downstream at 16 km/h. His rate in still water is---

883 . A man can row upstream at 8 kmph and downstream at 13 kmph. The speed of the stream is :

884 . A man can rows 6 km/hr in still water. When the river is running at 1.5 km/hr, it takes him 1.5 hour to row to a place and back. How far is the place?

885 . A man deposits certain amount in his bank account. After a few days. he withdraws half of the money deposited and deposits Tk. 500 more. If he has a balance of Tk. 2000 in his bank account, find the amount deposited initially.

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