2019 4marks Nanyang P6 Paper2 SA1

P6 / Nanyang / 2019 / SA1 / Paper 2 – Q14 [4 marks]

Question:

Mr Lee spent a total of $28.50 on some files, rulers and highlighters. He bought twice as many highlighters as files. Each ruler cost $0.50 and each file cost thrice as much as each highlighter. He spent $4.50 more on the files than on the highlighters. How many rulers did he buy?

Solution:

4 thoughts on “P6 / Nanyang / 2019 / SA1 / Paper 2 – Q14 [4 marks]

  1. Hi! To understand why $4.50 = 1 unit, we need to understand all 3 models.

    LEFT – Number of items
    MIDDLE – Cost of 1 item
    RIGHT – use LEFT x MIDDLE = Cost of all items bought

    Therefore, we deduce that F = 3 units, H = 2 units, and the difference between them = $4.50. –> 1 unit = $4.50

    Hope this clarifies!

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