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 / Nanyang / 2019 / CA1 / Paper 1 – Q14 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/04/P6_CA1_2019_Nanyang_Paper1_Q14-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Nan Hua / 2021 / SA2 / Paper 1 – Q09 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/08/P6_SA2_2021_Nan_Hua_Paper1_Q09-Qns.jpg?resize=400%2C260&ssl=1)