Question 97737: If a woman can mow a lawn in 2 hrs and her husband in 4 hrs how long will it take to mow the lawn if they work together Answer by josmiceli(6786) (Show Source):
You can put this solution on YOUR website! Combined rate = (1 lawn / 2 hrs) + (1 lawn / 4 hrs)
This says together they can mow 3 lawns in 4 hours
divide top and bottom by 3
So, together, they can mow 1 lawn in 4/3 of an hour or 1 hour 20 minutes
