1.

Roja and Pooja start moving in the opposite directions from a pole. They are moving at the speeds of 2 km/hr and 3 km/hr respectively. After 4 hours what will be the distance between them?

Answer»

20 km



Distance = Relative SPEED * TIME

= (2 + 3) * 4 = 20 km

[ They are travelling in the opposite direction, relative speed = sum of the SPEEDS].



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