Problema Solution
The length of a rectangle with constant area varies inversely as the width. When the length is 18 ft, the width is 8 ft. Find the length when the width is 9 ft
Answer provided by our tutors
l = k/w
18 ft = k/8 ft
(18 ft)(8 ft) = (k/8 ft)(8 ft)
144 ft^2 = k
l = k/9 ft
l = 144 ft^2/9 ft
l = 16 ft