Singapore Math Guru

Are you looking for this question from Catholic High SA 1 paper 2 question 9 that involves average?

Catholic High SA 1 paper 2 question 9


A group of boys had an average number of 42 marbles. One of the boys had wrongly counted his marbles as 35. the correct number of marbles he had should be 53. After re counting the marbles, the average number of marbles they had increased to 45. How many boys were there in the group

Are you looking for the solutions or answer to the question above? Sign up now with your child to find out more of such questions and view the related video explanations!!!

Register here!