Problema Solution
The length of a rectangular mailing label is 4 centimeters less than twice the width. The perimeter is 46 centimeters. Find the length of the label.
Answer provided by our tutors
let
l = the length of a rectangular mailing label
w = the width of a rectangular mailing label
the length of a rectangular mailing label is 4 centimeters less than twice the width
l = 2w - 4
the perimeter is 46 centimeters
2(l + w) = 46
by solving the system of equations
l = 2w - 4
2(l + w) = 46
we find
l = 14 cm
w = 9 cm
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