SOLUTION: One kind of bug can eat a leaf in 7 minutes. Another kind can eat the same leaf in 22 minutes. How long will it take if the bugs both eat the same leaf at the same time?
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Question 470411: One kind of bug can eat a leaf in 7 minutes. Another kind can eat the same leaf in 22 minutes. How long will it take if the bugs both eat the same leaf at the same time?
If A can do a job in x time periods, then A can do of the job in 1 time period. Likewise, if B can do the same job in y time periods, then B can do of the job in 1 time period.
So, working together, they can do
of the job in 1 time period.
Therefore, they can do the whole job in:
time periods.
John
My calculator said it, I believe it, that settles it
