Question 113724: Book: Basic Math Skills MATD-0330 by Pearson Prentice Hall
8.7 Exercise page 484 word problem #39
Solve each applied problem by finding the "base" in the percent equation.
Electric Bill Mary Beth's first electric bill for her new apartment was $95 for the month of June. When she complained to the landlord about the high cost of electricity, she was informed that summer electric bills are about 90% higher than winter because of the periodic summer use of air condioners. How much can Mary Beth expect her winter electric bill to be?
The book give the anwer of 50. I tried 95(.90)divided by 6(since June is the middle month for the year)and got $14.25
Book give the answer of 50.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Electric Bill Mary Beth's first electric bill for her new apartment was $95 for the month of June.
When she complained to the landlord about the high cost of electricity, she was informed that summer electric bills are about 90% higher than winter because of the periodic summer use of air condioners.
How much can Mary Beth expect her winter electric bill to be?
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Let her winter electric bill be "x".
EQUATION:
x + 0.90x = 95
1.90x = 95
x = $50
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Cheers,
Stan H.
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