Question:
A pack of trading cards contained 7 normal cards and 2 special cards. Weihua and John each bought a box of 40 packs of card. After opening their cards, they decided to trade with each other for the cards they wanted. 3 normal cards were traded for each special card. After trading, Weihua was left with a total 384 cards.
(a) How many cards did John have in the end?
(b) How many special cards did Weihua have in the end?
Solution:
![P6 / Nan Hua / 2019 / SA1 / Paper 2 – Q06 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/05/P6_Nan_Hua_2019_SA1_Paper2_Q06-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Catholic High / 2020 / SA2 Prelims / Paper 2 – Q07 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/06/P6_SA2_2020_Catholic_High_Paper2_Q07-Qns.jpg?resize=400%2C260&ssl=1)