Solve the Problem $\frac { 1 } { 18 }$ Hours
B)

Multiple Choice

Solve the problem.
-One maid can clean the house in 3 hours. Another maid can do the job in 6 hours. How long will it take them to do the job working together?

A) $\frac { 1 } { 18 }$ hours
B) $\frac { 1 } { 9 }$ hours
C) 6 hours
D) 2 hours