SOLUTION: the cost of a gym membership includes the initial fee and a monthly fee. Find the initial and monthly fees if the total cost for 5 months is $225 and the total cost for 10 months i
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Question 993366: the cost of a gym membership includes the initial fee and a monthly fee. Find the initial and monthly fees if the total cost for 5 months is $225 and the total cost for 10 months is $375. Answer by macston(5194) (Show Source):
You can put this solution on YOUR website! .
M=monthly fee; F=initial fee
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Total cost=initial fee+(number of months)(monthly fee)
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$225=F+5M
$225-5M=F
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$375=F+10M
$375=($225-5M)+10M
$375=$225+5M
$150=5M
$30=M
ANSWER 1: The monthly fee is $30.
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$225=F+5M
$225=F+5($30)
$225=F+$150
$75=F
ANSWER 2: The initial fee is $75
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CHECK:
$375=F+10M
$375=$75+10($30)
$375=$75+$300
$375=$375
