Question

Kim wants to paint the wall behind her bed.the dimensions of the wall are 8 ft by 10 ft . If one pint of paint covers 42 ft2 How many pints will she need to paint the wall?

Answer 1

`2\ pints`

Explanation:

step 1

Find the area of the wall

The area of the rectangular wall is

`A=(8)(10)=80\ ft^(2)`

step 2

Using proportion find out how many pints Kim needs to paint the wall

so

`(1)/(42)(pint)/(ft^2)=(x)/(80)(pints)/(ft^2)\\\\x=80/42\\\\x=1.9\ pints`

Round to the nearest whole number

`1.9=2\ pints`