Question:
Ali and Jim had some red and blue marbles. Jim had twice as many marbles as Ali. Ali had red and blue marbles in the ratio of 1 : 5. Jim had red and blue marbles in the ratio of 5 : 3. What was the ratio of the their total number of red marbles to their total of blue marbles?
Solution:
![P6 / CHIJ / 2020 / SA2 Prelims / Paper 2 – Q10 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_CHIJ_Paper2_Q10-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Ai Tong / 2019 / SA2 / Paper 2 – Q04 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/06/P6_Ai_Tong_2019_Prelims_Paper2_Q04-Qns.jpg?resize=400%2C260&ssl=1)