Question

Max and pedro both clean pools. Each charges a flat fee to clean a pool. Max cleans 12 pools in 8 hours and earned $270. Pedro cleans 9 pools in 7.5 hours and earned $195.75. How many pools do they clean in per hour?

Answer 1

The number of pools clean per hour is 1.5

Explanation:

Given as :

The number of pools clean in 8 hours = 12

The number of pools clean in 7.5 hours = 9

Let The number of pools they clean per hours = x

I.e x =
`(8)/(12)` +
`(7.5)/(9)`

Or, x =
`(24+30)/(36)`

Or, x =
`(54)/(36)`

∴ x =
`(3)/(2)`

I.e x = 1.5

Hence The number of pools clean per hour is 1.5 Answer