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Combined Bank is a Government Organization in Bangladesh. Combined Bank AUST has taken one hour long MCQ test in 25 May 2019 from 2.00 Pm to 4.00 PM.
Combined 8 Bank Senior Officer Written Exam Question Solution 2019:
Organization Name: Combined Bank Under Bangladesh Bank
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: 02 August 2019
Written Exam time: 10.00 Am to 12.00 PM
Combined 8 Bank Senior Officer Written Exam Result 2019
See/download Combined 8 Bank Senior Officer Written Exam Question Solution 2019 From below:
1. 288 sq.m
2. 567 liters
3. 37.5 tk
4. 131.25 m & 168.75 m
5. 7.07 days (Approx).
Combined SO (6B/2F) math solution:
1. A rectangular plot has a concrete path running in the middle of the plot parallel to the breadth of the plot. The rest of the plot is used as a lawn. which has an area of 240 sq. m. If the width of the path is 3m and the length of the plot is greater than its breadth by 2m, what is the area of the rectangular plot?
Solve: Let, length= x m breadth= y m ATQ, x= y+2 and (x-3)y= 240 or, (y+2-3)y= 240 or, y= 16 or -15 but y should be positive, so y=16 and x= 16+2=18 Required area= xy =18 × 16 =288 sq. m
2. A pipe can fill a tank in 0.9 hours and another pipe can empty in 0.7 hours. If tank is completely filled and both pipes are opened simultaneously then 450 liters of water is removed from the tank is 2.5 hours. What is the capacity of the tank?
Solve: In 2.5 hours, total removed= (1/0.7 – 1/0.9) × 2.5 parts (10/7 – 10/9) × 25/10 =50/63 ATQ, 50/63 parts= 450 liters So, 1(whole) part= (450 × 63)/50 = 567 liters
3. A sum of tk 3240 was fixed to complete a work. 54 workers completed the work in 8 days and the sum was divided equally among the workers. If the work was to be completed in 3 days, the how less much money each worker would receive compared to when the work was completed in 8 days?
Solve: In 8 days, each workers earn= Tk. 3280/54 = Tk. 60 To complete in 3 days, more workers will be required. Total workers required to complete in 3 days = (54 × 8)/ 3 =144 Now, each workers earn= Tk. 3240/144 = 22.50 So each worker receive less money =Tk. 60-22.50 =Tk. 37.50
4. Two trains running at the rate of 75 km and 60 km an hour respectively on parallel rails in opposite directions are observed to pass each other in 8 seconds, and when they are running in same direction at the same rates as before a person sitting in the faster train observes that he passes the other in 31 1/2 seconds. find the lengths of the trains.
Solve: Let, length of faster train= x m and slower train= y m For first case, x+y= (75+60)× 5/18 × 8 or, x+y = 300 Now, the faster train has to passes a distance equal to the length of the slower train. i.e. y= (75-60) × 5/18 × 31.5 =131.25 m So, x= 300-131.25 = 168.75 m
5. A, B and C can complete a work separately in 12, 18 and 24 days respectively. They started together but B left after 2 days before completion C left 4 days before the completion of the work. In how many days will the work be completed ?
Solve: Let, total time= x days ATQ, x/12 + (x-2)/18 + (x-4)/24 = 1 x= 7 days (approx.)
1. Let, W=x m L=x+2 m without path, L=x+2-3=x-1 atq, x(x-1)=240 => x^2-x-240=0 => x^2-16x+15x-250=0 => x=16 so, L=16+2=18 m w=16 m Area=18*16=288 sq.m
2.Total days=x days atq, x/12+(x-4)/18+(x-2)/24=1 From calculation=> x=92/13=7(1/13) days.
3. Each gets per day=3240/(54*8)=15/2 tk Total amount gets in 3 days=54*15/2*3 =1215 tk Save =3240-1215=2025tk Each worker less receive=2025/54=37.5 tk.
4. 1st condition: R.spees=75+60=135 km/hr Total length(2train)=135*8*5/18=300m 2nd condition: R.speed=75-60=15 km/hr Let, Length of faster train =x m and slower train=300-x m atq, (300-x)/(15*5/18)=63/2 => x=168.75 so, Lengrh of faster=168.75 m Slower=300-168.75=131.25 m
5. Pipe empty in 1 h=1/.7 – 1/.9=20/63 Now, 2.5 h empty=450 L 1 h empty=450/2.5=180 L atq, 20/63 part=180 1 part=180*60/20=567 L
See/download Combined 8 Bank Senior Officer Written Exam Question 2019 From PDF & images below:
Previous Solution:
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 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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See/download Combined 8 Bank Senior Officer Written Exam Question 2019 From PDF & images below:
Combined 8 Bank Senior Officer Written Exam Question Solution 2019 PDF
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