Question

a bag of fertilizer covers 3000 square feet of lawn. find how many bags of fertilizer should be purchased to cover a rectangular lawn 240 feet by 140 feet. to cover the lawn, bags of fertilizer are required. (round up to the nearest whole number.)

Explanation:

Step1: Calculate lawn area

The area of a rectangle is $A = l\times w$, where $l = 240$ feet and $w = 140$ feet. So $A=240\times140 = 33600$ square - feet.

Step2: Calculate number of bags

Let $n$ be the number of bags. We know that one bag covers 3000 square - feet. So $n=\frac{33600}{3000}=11.2$.

Step3: Round up

Since we can't buy a fraction of a bag and we need to cover the entire lawn, we round 11.2 up to the nearest whole number.

Answer:

12