A person sets to cover a distance of 12 km in 45 minutes. If he covers 3/4 of the distance in 2/3 time, what should be his speed to cover the remaining distance in the remaining time?

16 km/hr

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8 km/hr

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12 km/hr

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14 km /hr

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Solution

The correct option is C 12 km/hr
(c)
Distance already covered =
$\frac{3}{4} \times 12 = 9 k m$
Time spent =
$\frac{2}{3} \times 45 min = 30 min$

Distance left = (12 - 9)km = 3 km
Time left = ( 45 -30 )min = 15 min

$R e q u i r e d s p e e d = \frac{3}{15 / 60} k m / h r$

= 12 km /hr

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