Question

To fill a tank, 25 buckets of water is 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 ?

Answer 1

let the capacity of 1 bucket = x.

 the capacity of tank = 25x.

new capacity of bucket=2x/5
∴required number of buckets=25x/(2x/5)
                                              =125/2
                                               =62.5

Answer 2

To fill the tank, 25 buckets of water is required , So , let the capacity of bucket be x.

Therefore, capacity of Tank = 25x

If the capacity of bucket is reduced to 2/5 of its present then capacity of new bucket -
x×2/5 = 2x/5

Capacity of tank is 25x.

So, no of buckets required to fill the tank -

25x ÷ 2x/5

or, 25x × 5/2x

or, 125/2

or, 62.5 buckets