P6 / ACS / 2019 / CA1 – Q23 [4 marks]

Question:

In a shop, rulers are sold only in packs. A pack of 6 long rulers costs $8 and a pack of 4 short rulers cost $3.
(a) Justin bought an equal number of short and long rulers. He spent $126 more on the long rulers. How many long rulers did he buy?
(b) Mabel spent an equal amount of money on the long and short rulers. What fraction of the rulers she bought were short?

Solution: