Ruchir walks at 20 km/hr and Rukma cycles at 25 km/hr towards each other. What was the distance between them when they started if they meet after 48 minutes?
Speed of Rizvan = 20 km/hr and Ruchitha = 25 km/hr
Since they are moving in opposite direction, => Relative speed = 20 + 25 = 45 km/hr
Let distance between them = $$d$$ km and time = $$\frac{48}{60} = \frac{4}{5}$$ hr
=> time = distance/speed
=> $$\frac{d}{45} = \frac{4}{5}$$
=> $$d = \frac{4}{5} \times 45 = 4 \times 9$$
=> $$d = 36$$ km
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