Question

2. A construction company is preparing 10 acres of land for a new housing community. The landcontains large rocks that need to be removed. A machine removes 10 rocks from 360 square feet ofland. If the rocks are distributed evenly, how many rocks are there on all 10 acres?*1 acre = 43,560 sq. feet.

Answer 1

The rocks are distributed evenly on the land.

Therefore,

`\begin{gathered} 1\text{ acre=43,56}0\text{ sq f}eet \\ 10\text{ acres =?} \\ \text{cross multiply} \\ \text{area in square f}eet=43560*10=435600\text{ square f}eets \end{gathered}`
`\begin{gathered} \text{ 360 square f}eet=10\text{ rocks } \\ 435600\text{ square fe}et=? \\ \text{amount of rocks = }(435600*10)/(360)=12100\text{ rocks} \end{gathered}`

12100 rocka are on 10 acres of land