• #### SBI SO Exam Quantitative Aptitude Study Material

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a) X-y
b) Y-x
c) Xy/x-y
d) Xy/y-x

a) 18 minutes
b) 14 minutes
c) 15 minutes
d) 30 minutes

##### Water is flowing at the rate of 3 km/hr through a circular pipe of 20 cm internal diameter into a circular cistern of diameter 10m and depth 2m. In how much time will the cistern be filled ?

a) 1 hour
b) 1 hour 40 minutes
c) 1 hour 20 minutes
d) 2 hours 40 minutes

##### An empty pool being filled with water at a constant rate takes 8 hours to fill 3/5 th of its capacity. How much more time will it take to finish filling the pool ?

a) 4 hours 50 minutes
b) 5 hours 30 minutes
c) 5 hours 20 minutes
d) 4 hours 48 minutes

a) 70 hours
b) 80 hours
c) 90 hours
d) 100 hours

a) 4 1/4 hours
b) 2 1/2 hours
c) 3 1/3 hours
d) 5 1/3 hours

a) 45 minutes
b) 30 minutes
c) 25 minutes
d) 20 minutes

a) 5 minutes
b) 17/3minutes
c) 45/7 minutes
d) 5/4 minutes

a) 30
b) 12
c) 36
d) 24

a) 4 1/2
b) 3 1/2
c) 3 1/4
d) 4 2/3

##### Solution Is : Part of tank filled in first two hours = 1/4 + 1/6 = (3+2)/12 = 5/12. Part of tank filled I first 4 hours =10/12 =5/6. Remaining part 1 - 5/6 =1/6. This remaining part will be filled by pipe A. Time taken by Pipe A = (1/6) *4 = 2/3 hour. Therefore total time = 4+(2/3) = 4 2/3
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