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 / Methodist Girls / 2021 / SA2 / Paper 1 – Q02 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/06/P6_SA2_2021_Methodist_Girls_Paper1_Q02-Qns.jpg?resize=400%2C260&ssl=1)