Question

On average, Ainsley and her friends could complete 44 sit-ups in one minute. The number of sit-ups done by each of her friends is listed below. How many did Ainsley complete? *

47, 46, 38, 45, 41

Answer 1

47

Explanation:

The numbers given as 47, 46, 38, 45, 41 represent 5 people and adding Ainsley, they are 6 people.

The sum of individual sit ups by the 5 will be

47+46+38+45+41=217

Since the mean for 6 people is 44, it means their sum is 6*44=264

Getting the difference between the sum for 6 people and the sum for five people we get that

264-217=47

This is the number of sit-ups for the sixth person who is Ansley