Question

After Filling in 36 litres of water, a tank remains empty by 28%. How much quantity of more water will be required to fill it completely?

A. 19 litres
B. 14 litres
C. 11 litres
D. 13 litres

Answer 1

B) 14 litres
because If 36 litres of water fills 72%
100 - 28% = 72%
72 / 36 =2
28 / x = 2
x = 28 / 2 = 14

Answer 2

After filling in tank with 36 liters, the tank is empty by 28%, so,
                                               the tank is 100% - 28% = 72 % full.

72 % full tank contains 36 liters
100 % full tank contains :  [/tex]100 * \frac{36}{72} liters = 50 liters [/tex]

Additional quantity of water needed to fill the tank to full extent:
     50 - 36 = 14 liters