Solution for yesterday’s problem

The monkey’s net rate of climbing is 3 metres per 2 minutes

If the monkey climbed 6 metres in the last minute and reaches the top of the pole it would have  climbed 15 metres at the net rate in 10 minutes.

Therefore, in 11 minutes the monkey reached the top.

Today’s problem

John is twice as good workman as Peter and finished a piece of work in 3 hours less than Peter. In how many hours could they together finish that same piece of work?



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