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News from Mathnasium of St. Peter's North

Word Problem Wednesday 9-12-18

Sep 12, 2018

Question: Betsy buys 6 cookies from the store. The cookies have 5, 9, 10, 6, 7, and 11 chocolate chips in them respectively. What is the average number of chocolate chips per cookie?

(Hint: The average is the sum of all the values in a set, divided by the number of values in the set.)

Answer:  8 chocolate chips

Solution:  To find an average, we add up all the values in a set and then divide by the number of values. So, since there are 5 + 9 + 10 + 6 + 7 + 11 = 48 chocolate chips among 6 cookies, that means that the average is 48 ÷ 6 = 8 chocolate chips per cookie.