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The average time taken by both when they work together is 13.5 hours.
According to the statement
we have to find out time that they need to complete the job when they working together.
So, For this purpose, we know that the
Average time means the time over which the expo- sure is averaged.
According to the information:
John can finish painting a house in 12 hours. Mike takes 15 hours to finish the same job.
The time taken by both when they work together = john's time + mike's time/2
The time taken by both when they work together = 12+15/2
The time taken by both when they work together = 27/2
The time taken by both when they work together = 13.5 hours.
So, The average time taken by both when they work together is 13.5 hours.
Learn more about Average time here
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