Question:
A pen costs $k. A notebook costs 70 cents more than the pen.
(a) What is the cost of 3 pens and a notebook?
Express your answer in terms of k in the simplest form.
(b) Aaron paid $10.30 for 3 pens and a notebook. What is the value of k?
Solution:
![P6 / Ai Tong / 2019 / SA2 / Paper 2 – Q15 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/06/P6_Ai_Tong_2019_Prelims_Paper2_Q15-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Nanyang / 2020 / SA2 Prelims / Paper 2 – Q13 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/11/P6_Nanyang_2020_SA2_Paper2_Q13-Qns.jpg?resize=400%2C260&ssl=1)