Question

Sand costs three times as much as rocks per pound. If sand is $9.60 per pound, how much are rocks per pound?

Answer 1

Rock costs $3.20 per pound.

Explanation:

Because sand costs three times as much as rocks per pound, you can determine the cost of rocks per pound by dividing the cost of sand per pound by three:

`(9.60)/(3)`
`= 3.20`