P6 / River Valley / 2019 / SA2 / Paper 2 – Q15 [5 marks]

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: