Question:
There were three types of fruit in a box. The ratio of the number of mangoes to the total number of apples and oranges was 2 : 5. The ratio of the number of apples to the number of oranges was 9 : 1. There were 30 more apples than mangoes. After some mangoes were added into the box, 70% of the fruits in the box were mangoes.
(a) How many mangoes were there in the end?
(b) How many mangoes were added in the box?
Solution:
![P6 / Henry Park / 2020 / SA2 Prelims / Paper 1 – Q01 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_Henry_Park_Paper1_Q01-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / CHIJ / 2020 / SA2 Prelims / Paper 2 – Q14 [5 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_CHIJ_Paper2_Q14-Qns.jpg?resize=400%2C260&ssl=1)