**Max Can Mow A Lawn In 45 Minutes**. Jan takes twice as long to mow the same lawn. 1/(1/45+1/90) = 1/(1/30) = 30 min it will take them to mow the lawn.

Jan takes twice as long to mow the same lawn. 15.0 minutes 22.5 minutes 30.0. ∴ jan mow the lawn in 90 minutes.

### Battery Powered Riding Lawn Mower slideshare

1/45 jan can mow a lawn: Jan takes twice as long to mow the same lawn. 1/90 together they can mow a lawn: Max can mow a lawn: