P6 / Raffles Girls / 2020 / SA2 Prelims / Paper 2 – Q04 [2 marks]

Question:

Amos is 12 years younger than his sister. The ratio of Amos’ age to his sister’s age is 1 : 5. In how many years’ time will the ratio of Amos’ age to his sister’s age be 2 : 5?

Solution: