Problema Solution
Eric can wash a car in two hours. It takes John three hours to wash the car. Working together, how long will it take Eric and John to wash the car?
Answer provided by our tutors
If the rates are 1 car / 2 hours for Person1 and 1 car / 3 hours for Person 2, together they can wash 1 car in 1 hour and 20 minutes, or 80 minutes total.