SOLUTION: A can do a job in 5 hours at what rate must be B do the job so that working together, they can complete the job in 2 hours together.

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Question 883325: A can do a job in 5 hours at what rate must be B do the job so that working together, they can complete the job in 2 hours together.
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
RATES AS JOB PER HOUR
A, 1%2F5
B, 1%2Fb
Both A and B, 1%2F2
Assigned b = time in hours for B to do this job alone.

highlight%281%2F5%2B1%2Fb=1%2F2%29.