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

Question

Quizplus · Accepted Answer

When working together, the maids can clean the house in 2 hours. The first maid's rate is 1/3 of the house per hour, and the second maid's rate is 1/6 of the house per hour. Combined, they clean (1/3 + 1/6) = 1/2 of the house per hour, so it takes them 2 hours to clean the entire house.

Solve the Problem 118\frac { 1 } { 18 }181​ Hours B)

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