Question:
The line graphs show volume of water in Tank A and Tank B, with different capacities. At first, Tank A was completely filled with water while Tank B was half-filled with water.
A tap was turned on to drain out water from Tank A. After 20 minutes, the tap in Tank A was turned off. A tap was then turned on for 10 minutes for water to flow into Tank B at a constant rate and filling it to its brim.
(a) Complete the line graph to show the volume of water in Tank B in the last 10 minutes.
(b) How much water is drained from the tap in Tank A in 1 minute?
(c) How much more water flowed from the tap in Tank B as compared to the tap in Tank A in 10 minutes?
Solution:
![P6 / Methodist Girls / 2021 / SA2 / Paper 1 – Q17 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/06/P6_SA2_2021_Methodist_Girls_Paper1_Q17-Qns.jpg?resize=400%2C119&ssl=1)
![P6 / Catholic High / 2021 / SA2 / Paper 1
– Q21 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/05/P6_SA2_2021_Catholic_High_Paper1_Q21-Qns.jpg?resize=400%2C162&ssl=1)