12 buckets of water fill a tank when the capacity of each bucket is 13.5 litres. How many buckets will needed needed to fill the same tank, if the capacity of each bucket is 9 litres ?
A)8
B)15
C)16
D)18
Correct Answer:
D
Solution :
[d] Number of buckets required \[=\frac{12\times 13.5}{9}=18\]