Question

Amir can seal a driveway in four hours working together he and Louis conceal it in 2.3 hours how long would it take Louis to seal it working alone

Answer 1

Louis can seal the driveway in 5.41 hours.

Explanation:

`(1)/(4)` +
`(1)/(x)` =
`(1)/(2.3)` 4 × 1x × 2.3 = 9.2x

9.2x(
`(1)/(4)` +
`(1)/(x)` =
`(1)/(2.3)`)

2.3x + 9.2 = 4x

9.2 = 1.7x

x= 5.411764706