High School

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A construction company is preparing 10 acres of land for a

new housing community. The land contains large rocks that

need to be removed. A machine removes 15 rocks from 360

square feet of land.

1 acre = 43,560 square feet

About how many rocks will need to be removed from the 10

acres of land?

A construction company is preparing 10 acres of land for a new housing community The land contains large rocks that need to be removed A

Answer :

About 18,150 rocks need to be removed from the 10 acres of land.

To calculate how many rocks will need to be removed from the 10 acres of land, we need to establish the ratio of rocks to square footage and then apply that ratio to the total square footage of land being prepared. We know that a machine removes 15 rocks from 360 square feet of land.

First, we find out how many rocks are removed per acre:

15 rocks / 360 = x rocks / 43,560

Now we solve for x to find out how many rocks are in one acre:

x = (15 rocks * 43,560 ft²) / 360 ft²

x = 1815 rocks per acre

To find out how many rocks are in 10 acres, we multiply the number of rocks per acre by 10:

1815 rocks/acre * 10 acres = 18,150 rocks

Therefore, about 18,150 rocks will need to be removed from the 10 acres of land.

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Rewritten by : Barada

Answer:

A

Step-by-step explanation:

43560/360 = 121

131x15 = 1815 rocks per acre

1815 x 10 acres = 18150 rocks