A water tank is 2/5 full. After 36 litres are added, it becomes 7/10 full. What is the capacity of the tank?
Correct answer B. 120 litres
Explanation
The added water fills 7/10 − 2/5 = 7/10 − 4/10 = 3/10 of the tank. So capacity = 36 ÷ 3/10 = 120 litres.
Answer checked How we write and check questions
Discussion