Problema Solution
a building in a city has a rectangular base the length of the base measures 60 ft less than three times the width the perimeter of this base is 840 ft what ate the dimensions of the base?
the width of the base is? ft
Answer provided by our tutors
let
l = the length of the base
w = the width of the base
a building in a city has a rectangular base the length of the base measures 60 ft less than three times the width
l = 3w - 60
the perimeter of this base is 840 ft
2(l + w) = 840 divide both sides by 2
l + w = 420
by solving the system of equations
l = 3w - 60
l + w = 420
we find
l = 300 ft
w = 120 ft
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the width of the base is 120 feet.