Question:
The average of 6 numbers is 78. When one number was removed, the average increased by 9. What is the number that was removed?
Solution:
Empowering Students and Parents with Solutions
Empowering Students and Parents with Solutions
![P6 / Ai Tong / 2020 / SA2 Prelims / Paper 1 – Q05 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_Ai_Tong_Paper1_Q05-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / MahaBodhi / 2018 / SA2 / Paper 2 – Q12 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2019/08/Q12.jpg?resize=400%2C260&ssl=1)