Question:
April went to the supermarket to buy some toilet rolls for the family. Toilet rolls were sold at the prices shown below. She bought 1 big pack and 2 small packs. She paid the cashier $50 and received $21 change. What is the value of n?
Solution:
![P6 / Catholic High / 2018 / SA1 / Paper 2 – Q04 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/05/P6_SA1_2018_Catholic_High_Paper2_Q04-Qns.jpg?resize=400%2C260&ssl=1)