Two men P and Q start a journey from same place at a speed of 3km/hr and 3.5 km/hr respectively. If they move in the same direction then what is the distance between them after 4 hours?
Speed of P = 3 km/hr and speed of Q = 3.5 km/hr
Since, they are moving in same direction, relative speed = $$3.5 - 3 = 0.5$$ km/hr
Time = 4 hrs
Let distance between them = $$d$$ km
Using, distance = speed $$\times$$ time
=> $$d = 0.5 \times 4 = 2$$ km
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