1. Ravindra walks at 6 km/hr and Riya cycles at 11 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 02.14 am
Speed of Ravindra = 6 km/hr and Riya = 11 km/hr Since they are moving in opposite direction, => Relative speed = 6 + 11 = 17 km/hr Let distance between them = $$d$$ km and time = $$frac{42}{60}$$ hr => time = distance/speed => $$frac{d}{17} = frac{42}{60}$$ => $$d = frac{42}{60} imes 17 = frac{7 imes 17}{10}$$ => $$d = frac{119}{10} = 11.9$$ km => Ans - (D)
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