1) $12$ buckets of water fill a tank when the capacity of each tank is $13.5$ liters. How many buckets will be needed to fill the same tank, if the capacity of each bucket is $9$ liters ? A) 8 B) 15 C) 16 D) 18 Answer: Option DExplanation:Capacity of the tank $=(12\times 13.5)$ liters = 162 liters. Capacity of each bucket = 9 liters. Number of buckets needed $=\left(\frac{162}{9}\right)$ = 18