Question

A soldier needs twelve buckets of water to fill an army tank when the capacity of each bucket is 60 litres. How many buckets are needed to fill the same army tank, if the capacity of each bucket is 18 litres?

• A. 50
• B. 40
• C. 30
• D. 20

Answer 1

The correct option is B 40

Capacity (volume) of an army tank = 12 * 60 litres
Number of buckets required when the capacity of each bucket is 18 litre is:

$\frac{12\times 60}{18}=40$