SOLUTION: . Joe’s electric made 25 customer calls last week and 22 calls this week. How many calls must bee made next week in order to maintain an average of 20 calls for the three week peri

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Question 361035: . Joe’s electric made 25 customer calls last week and 22 calls this week. How many calls must bee made next week in order to maintain an average of 20 calls for the three week period.
At least ? calls must be made to maintain an average of 20 calls .
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Joe’s electric made 25 customer calls last week and 22 calls this week. How many calls must bee made next week in order to maintain an average of 20 calls for the three week period.
average required 20 in 3 weeks
so total calls in 3 weeks will be 60.
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in 2 weeks 25+22=47 calls have been made.
..
60-47 = 13 calls minimum have to be made to average 20.
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m.ananth@hotmail.ca