Question:
Jun Yang had 5 boxes each containing an equal number of apples and 7 empty boxes as shown below. He removed 21 apples from each of the 5 boxes and packed them into 7 empty boxes. After that, each of the 11 boxes had the same number apples except for the 12th box which had only 3 apples. How many apples were there in all the 12 boxes altogether?
Solution:
![P6 / ACS / 2020 / SA2 Prelims / Paper 1 – Q10 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/05/P6_SA2_2020_ACS_Paper1_Q10-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Henry Park / 2021 / SA2 / Paper 1 –
Q25 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/06/P6_SA2_2021_Henry_Park_Paper1_Q25-Qns.jpg?resize=400%2C260&ssl=1)