Question:
Irin is now 2r years old. She is 10 years younger than Kexin. Junita is half the total age of Irin and Kexin.
(a) How old is Junita now? Leave your answer in terms of r.
(b) Given r = 7, what was the total age of the three girls 4 years ago?
Solution:
![P6 / MahaBodhi / 2018 / SA2 / Paper 2 – Q11 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2019/08/Q11.jpg?resize=400%2C201&ssl=1)
![P6 / Maris Stella / 2019 / SA1 / Paper 2 – Q04 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/04/P6_MarisStella_2019_SA1_Paper2_Q04-Qns.jpg?resize=400%2C260&ssl=1)