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Question 1047015: Over the last three evenings, Karen received a total of 100 phone calls at the call center. The second evening, she received 10 fewer calls than the first evening. The third evening, she received 3 times as many calls as the first evening. How many phone calls did she receive each evening?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Over the last three evenings, Karen received a total of 100 phone calls at the call center. The second evening, she received 10 fewer calls than the first evening. The third evening, she received 3 times as many calls as the first evening. How many phone calls did she receive each evening?
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f + s + t = 100 calls
s = f+10
t = 3f
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Solve for "f"::
f + f+10 + 3f = 100
5f = 90
f = 18 (calls on first night)
s = f+10 = 28 (calls on second night)
t = 3f = 54 (calls on third night)
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Cheers,
Stan H.
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