Question:
A rectangular tank measuring 50 cm by 40 cm by 30 cm was 4/5 filled with water at first.
Water was then poured out from the tank from 6 a.m. to 11 a.m. and the volume of water left in the tank is shown in the line graph.
(a) What was the volume of water in the tank at first? Give your answer in litres.
(b) At what time was 1/4 of the tank filled with water?
Solution:
![P6 / ACS / 2018 / SA2 / Paper 2 – Q11 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2019/06/P6-ACS-2018-Paper2-Q11.jpg?resize=400%2C260&ssl=1)
![P6 / ACS / 2020 / SA2 / Paper 2 – Q14 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/09/P6_ACS_2020_SA2_Paper2_Q14-Qns.jpg?resize=400%2C260&ssl=1)