Question

a customer wants a driveway with total area of 900ft2. the garage sets off the road 50'. how wide must the driveway be?

Answer 1

assuming is a rectangular driveway,

$\bf \textit{area of a rectangle}\\\\ A=Lw~~ \begin{cases} L=length\\ w=width\\[-0.5em] \hrulefill\\ L=50\\ A=900 \end{cases}\implies 900=50w\implies \cfrac{900}{50}=w\implies 18=w$