COMBINED 8 BANK WRITTEN QUESTION FULL SOLUTION 2019

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SEE THE BELOW SOLUTION 

Exam Type: Written

Post: Senior Officer (General)

Combined 8 Bank and FIS Name And Vacancy:

1. Sonali Limited-260

2. Janata Bank Ltd-400

3. Bangladesh Krishi Bank-397

4. Bangladesh Development Bank-12

5. Karmasangsthan Bank-107

6. Probashi Kollyan Bank-36

7. Investment Corporation of Bangladesh (ICB)-05

8. Bangladesh House Building Finance Corporation(BHBFC)-12

Total Vacancy: 1229

Exam Taker: Ahsanullah University of Science and Technology (AUST)

Admit Download Last Date Was: 12 January 2019

Application Last Date Was: 31 October 2018

MCQ Exam Date Was: 10 May 2019

Exam Time Was: 10:30 AM to 11:30 AM

Written Exam Date: 25 May 2019

Written Exam time: 2.00 Pm to 4.00 PM

 

See/download Combined 8 Bank Senior Officer Written Exam Question Solution 2019 From below:

Written Math Solution:

Ans: নিচে গণিতের ব্যাখ্যাসহ সমাধান দেওয়া আছে…

5. Three partners shared the profit in a business in the ratio 5 : 7 : 8. They had partnered for 14 months, 8 months and 7 months respectively. What was the ratio of their investments?

Ans: 20:49:64

6. Two pipes can separately fill a tank in 20 and 30 hours respectively. Both the pipes are opened to fill the tank but when the tank is 1/3 full, a leak develops in the tank through which one-third of water supplied by both the pipes goes out. What is the total time taken to fill the tank?

Ans: 16  hours

7. A sum of money becomes 8 times in 3 years at compound interest. How many years it will become 16 times?

Ans: 4 years

8. An engineer undertakes a project to build a road 15 km long in 300 days and employs 45 men for the purpose. After 100 days, he finds only 2.5 km of the road has been completed. Find the (approx.) number of extra men he must employ to finish the work in time.

Ans: 68 men

9 . A can contains a mixture of two liquids A and B is the ratio 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially? Ans: 21 liter

Detail Written Math Solution:

5. Three partners shared the profit in a business in the ratio 5 : 7 : 8. They had partnered for 14 months, 8 months and 7 months respectively. What was the ratio of their investments?

Solution:

let,  a,b, c are the investments

According to question:

14a:8b:7c = 5:7:8

From this, a/b= 20/49 and b/c =49/64

So, a:b:c =20:49:64 (Ans)

Or

 

6. Two pipes can separately fill a tank in 20 and 30 hours respectively. Both the pipes are opened to fill the tank but when the tank is 1/3 full, a leak develops in the tank through which one-third of water supplied by both the pipes goes out. What is the total time taken to fill the tank?

Solution:

In 1 hour, tank filled = 1/20 + 1/30
= 1/12
The leakage will drain 1/3 of the tank ( at what rate, that is not given)
So the two pipes will fill the tank and also fill 1/3 more so that the leakage is overcome.
To fill the whole tank it requires = 12 hours
For extra 1/3 it requires = 1/3 ×12 hrs
= 4 hours
Total time = 12+4

=16 hours (Ans)

Or

 

7. A sum of money becomes 8 times in 3 years at compound interest. How many years it will become 16 times?

Solution:

let P= Principal
r = rate of interest
According to the question:

P(1+r)^3 =8p
r=1 or 100%
And, P ( 1+r )^n = 16P

n= 4 years (Ans)

8. An engineer undertakes a project to build a road 15 km long in 300 days and employs 45 men for the purpose. After 100 days, he finds only 2.5 km of the road has been completed. Find the (approx.) number of extra men he must employ to finish the work in time.

Solution:

Here,
Remaining days= 200-100
=100 days
Remaining work = 15-2.5
=12. 5 km
Now,
In 100 days 2.5 km done by 45 men
In 1 day 1 km done by 45 ×100 / 2.5
In 200 days 12.5 km done by (45 ×12.5 ×100) / (2.5 × 200)
= 112.5≈113
Extra men required = 113-45

=68 (Ans)

9.

A can contains a mixture of two liquids A and B is the ratio 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?

Solution:

Let A= 7x liter
B= 5x liter
According to question:
(7x – 9× 7/12) / (5x- 9× 5/12 + 9) = 7/9

x = 3
So, amount of A = 3×7

= 21 liter (Ans)

 

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