Question

Cost of Lumber: Nina is building a fence. She buys four fence posts at the lumberyard, each measuring 3 ft 4 in. The lumber costs $6 per foot. How much will Nina spend?Nina will spend $.

Answer 1

Nina will spend $ 25.98

Explanation

number of fences= 4

the measure of each fence= 3 ft and 4 inch

Step 1

convert the inches into ft

to do that

remember

12 inches = 1 ft

so

$4\text{ inc(}\frac{1\text{ ft}}{12\text{ inches}}\text{)= }\frac{1}{3}\text{ ft = 0.333 ft}$

therefore, the measure of each fence is

$\text{fence}=\text{ 3 ft+ 0.33 ft= 3.33 ft}$

Step 2

if the cost is $6 per foot,

the total would be

$\begin{gathered} \cos t=\text{ number of fence}\cdot measure\text{ of each}\cdot\cos t\text{ per foot} \\ \text{ Cost=4}\cdot3.33\text{ ft}\cdot6\frac{\text{ \ }}{ft} \\ \text{Cost}=25.98 \end{gathered}$

therefore, the answer is

$ 25.98

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