Question
A person has to cover a distance of 6 km in 45 minutes. If he covers one half of the distance in two-third of the total time , to cover the remaining distance in he remaining time , his speed (in km/hr) must be :
Answer: Option C
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Remaining distance = 3 km and Remaining time = `(1/3 xx 45) `min = 15 min = `1/4` hour.
`:.` Required speed = (3 x 4) km/hr = 12 km/hr.
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