Question

Jessica is a custodian at Oracle Arena. She waxes 20m2 of the floor in 3/5 of an hour. Jessica waxes the floor at a constant rate. At this rate, how many square meters can she wax per hour?

Answer 1

Answer:
`(100)/(3)m^(2)`

Explanation:

Let
`r` be the rate at which Jessica waxes.

Let
`A` be the area which Jessica waxes in
`t` hours of time.

So,
`A=rt`

Given that she waxes
`20m^(2)` in
`(3)/(5)` hours.

`20=r* (3)/(5)`

`r=(100)/(3)`

To know how much area she sweeps in a hour,substitute
`1` for
`t` in the above equation.

`A=(100)/(3)* 1=(100)/(3)m^(2)`