peter is twice as fast as john, john as trice as fast as mery is. mary is travelled a certain distance in 30 minutes, how much time will john take to cover the same distance?
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John will take 10 minutes to cover same distance as mery and Peter will take 5 minutes
as John is faster than mery by trice then time will reduced to 1/3 of total time
as John is faster than mery by trice then time will reduced to 1/3 of total time
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