To fill a tank 25 buckets of water are required. How many buckets of water will be required to fill the same tank if the capacity of the bucket is reduced to two-fifth of its present capacity?

A) 30

C) 62.5

B) 35

D) None of these

Let the capacity of 1 bucket = x 

Then, the capacity of the tank = 25x

New capacity of bucket  = (2/5)x

Required no of buckets = 25x/(2x/5)  = 62.5

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