Question:
An exercise book was $2 less than a file. The total cost of 3 such exercise books was $k.
(a) Express the cost of 6 such exercise books in terms of k in the simplest form.
(b) Suresh bought 3 such files and was given a discount of $1.
How much did he pay for the 3 files?
Express your answer in terms of k in the simplest form.
Solution:
![P6 / Catholic High / 2020 / SA2 Prelims / Paper 1 – Q29 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/06/P6_SA2_2020_Catholic_High_Paper1_Q29-Qns.jpg?resize=400%2C227&ssl=1)