Question

You can paint 75 square feet of a surface every 45 minutes. Determine how long it takes you to paint a wall with the given dimensions.
7 ft ×​ 6 ft

Answer 1

Answer:

25.2 minutes

Step-by-step explanation:

step 1

Find the area of the given wall

$A=(7)(6)=42\ ft^2$

step 2

we know that

You can paint 75 square feet of a surface every 45 minutes

so

using proportion

Find out how long it takes you to paint a surface area of 42 square feet

$\frac{75}{45}\ \frac{ft^2}{min}=\frac{42}{x}\ \frac{ft^2}{min}\\\\x=45(42)/75\\\\x=25.2\ min$