Question:
Red and white erasers are both placed in box A and box B. Box A has as many erasers as box B. The ratio of the number of red erasers to the number of white erasers in box A is 3 : 2 and in box B, it is 7 : 8. What is the ratio of the total number of red erasers to the total number of white erasers?
Solution:
![P6 / Nanyang / 2019 / CA1 / Paper 2 – Q03 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/04/P6_CA1_2019_Nanyang_Paper2_Q03-Qns.jpg?resize=400%2C205&ssl=1)
![P6 / ACS (Junior) / 2021 / SA2 Prelims / Paper 1 – Q17 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/05/P6_SA2_2021_ACS_Junior_Paper1_Q17-Qns.jpg?resize=400%2C144&ssl=1)