P6 / Catholic High / 2019 / SA2 / Paper 2 – Q15 [5 marks]

Question:

In a shop, bread and cheese were sold only in packets as shown below. A packet of 8 slices of bread cost $1.70 and a packet of 5 slices of cheese cost $2.25.
(a) Evan wanted 27 slices of bread and 18 slices of cheese to make some sandwiches. What was the least amount of money that Evan spent on the bread and cheese at the shop?
(b) Ron wanted to make at least 50 sandwiches for a party, each using only 2 slices of bread and a slice of cheese.
He bought some packets of bread and cheese and did not have any remaining slices of bread and cheese after he finished making the sandwiches. What was the least amount of money that Ron spent on the bread and cheese at the shop?

Solution: