1. Rizvan walks at 15 km/hr and Ruchitha cycles at 20 km/hr towards each other. What was the distance between them when they started if they meet after 42 minutes?
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By: anil on 05 May 2019 02.12 am
Speed of Rizvan = 15 km/hr and Ruchitha = 20 km/hr Since they are moving in opposite direction, => Relative speed = 20 + 15 = 35 km/hr Let distance between them = $$d$$ km and time = $$frac{42}{60}$$ hr => time = distance/speed => $$frac{d}{35} = frac{42}{60}$$ => $$d = frac{42}{60} imes 35 = frac{7 imes 7}{2}$$ => $$d = frac{49}{2} = 24.5$$ km
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