Sandbox

Sandbox has area of 32 sq ft and length of 4 1/2 ft. What is width of sandbox.

Correct answer:

w =  7.1111 ft

Step-by-step explanation:

$$\begin{gathered} S=32{\text{ft}}^2 \\ l=4+1\mathrm{/}2={\displaystyle \frac{9}{2}}=4.5\text{ ft } \\ S=wl \\ w=S\mathrm{/}l=32\mathrm{/}4.5={\displaystyle \frac{64}{9}}=7.1111\text{ ft} \end{gathered}$$

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