Question

one fourth of a tank hold 135 litres of water. what part of it contanis 180 litres of water

Answer 1

Let the water can be hold by tank is x litres

1/4 of x = 135 litres

x = 135×4

Now,

part of it contanis 180 litres of water
i.e.,
180/x = 180/(135×4) = 1/3 part