Question:
The average mass of a group of children was 66.8 kg. When Mrs Pang measured and recorded the mass of these children, she wrongly recorded one child’s mass as 59 kg when it should have been 95 kg. As a result, Mrs Pang calculated the average mass as 64.8 kg. How many children were there in the group?
Solution:
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– Q03 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/05/P6_SA2_2021_Catholic_High_Paper1_Q03-Qns.jpg?resize=400%2C260&ssl=1)