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A person has to cover a distance of 6 km in 45 min. If he covers 1/2 of the distance in 2/3 of the total time, to cover the remaining dista…

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A person has to cover a distance of 6 km in 45 min. If he covers 1/2 of the distance in 2/3 of the total time, to cover the remaining distance in the remaining time, his speed (in kmph) must be?

A6 kmph
B8 kmph
C12 kmph
D15 kmph

Correct answer: C

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CCommunity10 Jul 2021

12 kmph

Remaining distance = 3 km
And remaining time = 45 x 1/3 = 15 min = 1/4 hour.
Required speed = (3 x 4) kmph = 12 kmph.

CCommunity29 Nov 2021

Distance = Speed × Time

= (6×50/60)

d = 5km

T=d/s

5/10 = 1/2

T= 30 min