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27 October, 20:58

Celeste wants to have her hair cut and permed and also go to lunch. She knows she will need $68. The perm costs twice as much as her haircut and she needs $5 for lunch. How much does the perm cost?

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  1. 27 October, 21:10
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    Total is 68 and the perm is 2 times as much as her haircut and her lunch is $5

    so ...

    2h+h+5 = 68 (add like terms)

    3h+5 = 68 (subtract 5 from both sides)

    -5 - 5

    3h = 63 (divide by 3)

    h = 21

    so if her haircut is 21 dollars

    21*2 = $42

    her perm cost 42 dollars
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