A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?
Choose the correct choice from the following choices.
A) 22 1/8 days
B) 22 1/2 days
C) 22 6/2 days
D) 72 1/2 days
E) 23 1/2 days
1/18 + 1/30 = 8/90 = 4/45   45/4 = 11 1/4 *2 = 22 1/2 days   Answer: 22 1/2 days
<result>B</result>
A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?