What will be his Speed? If

A man has to cover a distance of 6 km. in 45 minutes. If he covers one-half of the distance in 2/3rd time, what should be his speed to cover the remaining distance in the remaining time?

  1. 12 km/hr
  2. 14 km/hr
  3. 8 km/hr
  4. 10 km/hr
kailashkumar Default Asked on 30th July 2015 in Maths.
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1 Answer(s)

Answer: (1) 12 km/hr
Explanation:-
Total distance covered by a man  in 45 minutes = 6 km
Time = 45 min = 45 /60
= 3/4 hr

Then, speed = 6 x 4/3
= 8 km/ hr

one – half of distance = 6/2 = 3 km
2/3 rd of time = 3 x 2 / 4 x 3
= 1/2  hr
Remaining time = 3/4 – 1/2
= (3 – 2)/4
= 1/4 hr
Remaining distance = 6 – 3 = 3 km
Speed  = 3  x 4/1
= 12 km/hr
Hence, the answer is (1) 12 km/hr

Anurag Mishra Professor Answered on 30th July 2015.
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