P6 / Maha Bodhi / 2019 / SA1 / Paper 2 – Q10 [4 marks]

Question:

The line graph shows the amount of water used by a family from March to June. The water used is charged at the rate of 85¢ per m³.
(a) What was the average amount paid per month for the water used from March to June?
(b) The average amount of water used from May to July is 400 m³. Find the amount of water used in July.