Problema Solution
Mary wants to have her hair cut and permed and also go to lunch. she knows she will be $59. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?
Answer provided by our tutors
let
x = the cost of haircut
2x = the cost of perm
$5 = the cost of lunch
she spent total of $59 thus
x + 2x + 5 = 59
by solving the equation we find
x = $18
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2x = $36
the perm costs $36.