Question:
Grandma has 2 rectangular tanks, Tank X and Tank Y. Tank X is an empty container with a square base of sides 30 cm. Tank Y measures 20 cm by 30 cm by 100 cm. Tank Y was 4/5 filled with water at first.
Grandma then poured some water from Tank Y into Tank X until the height of the water in Tank X became 2 times the height of the water in Tank Y.
(a) How much water was in Tank Y at first?
(b) What was the height of the water in Tank X in the end?
Solution:
![P6 / Maris Stella / 2020 / SA2 Prelims / Paper 2 – Q05 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/12/P6_SA2_2020_Maris_Stella_Paper2_Q05-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Raffles Girls / 2020 / SA2 Prelims / Paper 2 – Q05 [ marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/11/P6_Raffles_Girls_2020_SA2_Paper2_Q05-Qns.jpg?resize=400%2C260&ssl=1)