1. Raju has to cover a distance of 240 km in 4 hours. If he covers one-third of the journey in 2/7th time, what is his speed at the beginning of the journey?
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By: anil on 05 May 2019 02.24 am
Distance covered = $$frac{1}{3} imes240=80$$ km Time taken = $$frac{2}{7} imes4=frac{8}{7}$$ hr => Speed = distance/time = $$80divfrac{8}{7}$$ = $$80 imesfrac{7}{8}$$ = $$10 imes7=70$$ km/hr => Ans - (A)
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