A large wooden prism will be covered with spray paint for a prop in a school play. The prop must be painted on all sides. A can of spray paint costs $4.00 and will cover 40 square feet. What is the cost to paint the box ?

160

Step-by-step explanation:

In this question, we dont know the lenth and the width of the prism, so allow me to assume this two values and the large wooden prism is the rectangular one with the:

So the area of it's side is: 10*4 = 40

We have to paint 4 sides, so the are is: 40*4 = 160

A can of spray paint costs $4.00 and will cover 40 square feet, so the number of spraies is: 160/40 = 4

The total cost = 4 *40 = 160 to paint the box

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b