A tank is 3/8 full. After 150 litres are added it is 5/8 full. What is the capacity of the tank?
Need a hint?
150 litres fills 2/8 of the tank.
Worked answer
- 5/8 − 3/8 = 2/8 = 150 litres.
- 1/8 = 75 litres, so 8/8 = 600 litres.
Answer: 600 litres
The mistake this question tests
Wrong answers children often give:
- 400 Fraction of a remainder
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