Question

If two cans of paint can cover 750 square feet, how much money would it cost to paint 15,000 square feet at $25 per can and a sales tax rate of 7%?

Answer 1

Given

2 cans cover 750 square feet

x cans cover 15000 square feet

Then, find x:

$\begin{gathered} 750\times x=15000\times2 \\ 750x=30000 \\ \frac{750x}{750}=\frac{30000}{750} \\ x=40 \end{gathered}$

This is, 40 cans of paint can cover 15000 square feet.

On the other hand, we have:

1 can has a price of $25, so

$40\times25=1000$

Therefore, 40 cans have a price of $1000

And finally, the sales tax rate is 7%, this is:

$1000\times\frac{7}{100}=1000\times0.07=70$

Hence, the total cost is

$1000+70=1070$

Answer: E. $1070