New topic. I think?
A project whereas A team and B team work together needs 24 days to finish. If A team works for 6 days and B team works for 4 days, they can only finish of the project. So, how many days will it take B to finish the project?
The answer is 40.
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1 solution
Call A's rate 1/A project per day and B's rate 1/B. We are given
A 2 4 + B 2 4 = 1
A 6 + B 4 = 5 1
Multiply the second equation by 4 and subtract them to get
B 8 = 5 1
B = 4 0 days per 1 project.