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.
Solution:
![P6 / ACS / 2018 / SA1 / Paper 2 – Q09 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/05/P6_SA1_2018_ACS_Paper2_Q09-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Maris Stella / 2020 / SA2 Prelims / Paper 1 – Q07 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/12/P6_SA2_2020_Maris_Stella_Paper1_Q07-Qns.jpg?resize=400%2C260&ssl=1)