Two persons walk each other 7:30 a.m. if their speed are 4 km per hr and 6 km per hr and initially there distance is 25 kilometre then in what time they will meet to each other ?
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Their relative speed is 4 +6 km/h since they walk towards each other. This means 10 km/h.
Their relative distance decreases at 10 km/h, starting from 25 km, it will reach 0 (=they meet) in 25/10= 2.5 hours = 2 hours and 30 minutes.
You have to add 2 hours and 30 minutes to their starting time to get their meeting time.
7:30 am +2:30 = 10:00am.
They will meet each other at 10:am
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