Question

The amount of fertilizer needed for a lawn varies directly with the area of the lawn Mr. Dundee lawn is a rectangular shape and measures 78' x 93' 4 pounds of fertilizer are needed for 750 ft.² of lawn how much is needed for Mr. Dundees lawn to the nearest whole pound

Answer 1

39 pounds is needed

Explanation:

Given

Lawn Dimension: 78' by 93'

4 pounds fertilizer for 750ft² area

Required

Determine the amount needed for the given dimension

First, we need to calculate the area of the lawn

`Area = 78' * 93'`

' means feet

So:

`Area = 78ft * 93ft`

`Area = 7254 ft^2`

Let the amount of fertilizer need be x

So, we have:

4 pounds = 750ft²

and

x = 7254ft²

Cross Multiply:

`x * 750 = 4 * 7254`

`x * 750 = 29016`

Solve for x

`x = 29016/750`

`x = 38.688`

`x = 39` (approximated)