28 buckets of water fill a tank when the capacity of each bucket is 13.5 litres. How many buckets will be required to fill the same tank if the capacity of each bucket is 9 litres?  Choose the correct choice from the following choices
A) 30	B) 42	C) 60	D) data inadequate	E) none of these

Rationale: "capacity of the tank = 28 ã — 13.5 = 378 litres when the capacity of each bucket = 9 litres , then the required no . of buckets = 378 â  „ 9 = 42 answer b"
Answer: B