Question

f
9. A fish tank can hold 45 litres of water when filled to the brim. It is
If { of the water is removed, how much more water must be added in order
to fill the tank to the brim ?
(A) 12 litres (B) 20 litres
(2018) A B C
(C) 33 litres (D) 35 litres​

Answer 1

Total capacity of tank = 45lt

It is 4/9 filled = 4/9(45) = 20 lt

Now 2/5 water is removed= 2/5(20)

= 8lt

Remaining water = 20 - 8 = 12lt

Now

To fill it to the brim = 45- 12 = 33lt

I.e 33lt more water needs to be added