Question:
Stanley bought 4 times as many pencils as notebooks and 3 times as many erasers as notebooks. He spent a total of $62.40 on these items. He spent $9.60 more on the pencils than the notebooks and $4.80 more on the notebooks than the erasers. Each notebook cost $2.40 more than each eraser. How many pencils did Stanley buy?
Solution:
![P6 / Nanyang / 2019 / CA1 / Paper 1 – Q27 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/04/P6_CA1_2019_Nanyang_Paper1_Q27-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / ACS / 2020 / SA2 Prelims / Paper 1 – Q30 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/05/P6_SA2_2020_ACS_Paper1_Q30-Qns.jpg?resize=400%2C260&ssl=1)