Question

Sally can paint a room in 6 hours while it takes Steve 3 hours to paint the same room. How long would it take them to paint the room if they worked​ together?

Answer 1

2 hours

Explanation:

Rate_Sally=1/3, Rate_Steve=1/6, Rate_Together=Rate_Sally+Rate_Steve;

T_Together=1/Rate_Together

=1/(1/3+1/6)=1/(1/2)=2 hours