Claire can paint the living room in 7 hours and Barry can paint the living room in 5 hours. How many hours will it take for both of them working together to paint the living room?  Choices
A) 2  B) 2 11/12  C) 3 5/11  D) 4 1/2  E) 5
Work hrs=A2 11/12/(A+2 11/12)= 35/12 =2 11/12   Answer is 2 11/12
<result>B</result>
Claire can paint the living room in 7 hours and Barry can paint the living room in 5 hours. How many hours will it take for both of them working together to paint the living room?