Ravi can do a piece of work in 15hours while Raman can do it 12hours. how long will both take to do it, working together?
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Answer:
13.5 hours
Step-by-step explanation:
We can find the answer by finding the average. The average of this is
(12 + 15)/2
This is simplified into
27/2
Which is equal to
13.5 hours working together!!
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