Question:
A tank was partially filled with water at first. A tap was turned on from 06 00, and the tank was completely filled to 48 litres at 10 00. A line graph, showing the volume of water in the tank at regular intervals of time was drawn up as shown below. However, the line graph only shows the readings from 06 00 to 09 00.
(a) Complete the line graph from the 09 00 to 10 00 with a straight line.
(b) What fraction of the tank was filled with water at first? Express your answer as a fraction in its simplest form?
(c) What was the percentage increase in the amount of water in the tank from 08 00 to 09 00?
Solution:
![P6 / CHIJ / 2019 / SA2 / Paper 2 – Q05 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/06/P6_CHIJ_2019_Prelims_Paper2_Q05-Qns-scaled.jpg?resize=400%2C260&ssl=1)
![P6 / Catholic High / 2019 / SA1 / Paper 2 – Q05 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/04/P6_Catholic_2019_SA1_Paper2_Q05-Qns.jpg?resize=400%2C260&ssl=1)