Question

Marc can wash the cars in 4 hours alone and Madison can wash the same cars in 2 hours alone how long would it take if they worked together

Answer 1

My answer 2 hour

Explanation:

If whats-his-face can do it in 4 and girl can do it in 2 divide 4 and 2 and get 2.

Hope you get it right tell me if this is correct or not.