Question:
In a 4 by 100 m relay, Rani completed the first 100 m in 10 s, Eunice completed the second 100 m in 15 s, Joyce completed the third 100 m in 13 s and Siti completed the last 100 m in 12 s. What was the average speed of the 4 children for the relay?
Solution:
![P6 / Catholic High / 2021 / SA2 / Paper 2
– Q11 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/05/P6_SA2_2021_Catholic_High_Paper2_Q11-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Nanyang / 2019 / SA1 / Paper 2 – Q15 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/05/P6_Nanyang_2019_SA1_Paper2_Q15-Qns.jpg?resize=400%2C220&ssl=1)