Question

A water tank can be emptied fully using any of the pots of 12 litres, 18 litr
24 litres capacity. What is the minimum capacity of water tank? ​

Answer 1

Step-by-step explanation:

x = litres drained

12 - x = remaining amount

remaining amount should be = x - 6

therefore,

12 - x = x - 6

12 +6 = x +x

18 = 2x

x = 9