Question:
A tank is filled with water from 2 taps. Tap A alone can fill the tank completely in 10 minutes. Tap B alone can fill the tank twice as fast as Tap A. Both taps are turned on at the same time.
(a) How long does it take for Tap B alone to fill the tank completely?
(b) How long does it take for both taps to fill the tank completely?
Solution:
![P6 / Rosyth / 2019 / SA2 / Paper 2 – Q05 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/07/P6_Rosyth_2019_Prelims_Paper2_Q05-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Henry Park / 2020 / SA2 Prelims / Paper 2 – Q01 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/09/P6_Henry_Park_2020_SA2_Paper2_Q01-Qns.jpg?resize=400%2C256&ssl=1)