arithmetic - 12 buckets of water fill a tank when the capacity of each tank is 135 litres how many buckets will be needed to fill the same tank if the capacity of each bucket is 9 litres - skillgun

Capacity of the tank = (12*13.5) litres
= 162 litres
Capacity of each bucket = 9 litres.
So we can get answer by dividing total capacity of tank by total capacity of bucket.
Number of buckets needed = (162/9) = 18 buckets