How Much Distance Covered by the Boy? If

If a boy takes as much time in running 10 m as a car takes in covering 25 m, the distance covered by the boy during the time car covers 1 km is:

  1. 40 m
  2. 400 m
  3. 250 m
  4. None of these
Desire Adnan Default Asked on 3rd August 2015 in Maths.
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1 Answer(s)

Answer: (2) 400 m
Explanation:-
Let the speed of boy = X  &  the speed of car = Y
Formula-
Time = distance/speed
= 10/X = 25/Y
X/ Y = 10/25

1 km = 1000 m
Then,
Distance covered by boy = time taken by car for travelling 1000 m x speed of X
time taken by Y = 1000/Y

Then, distance covered by boy = 1000/X  x Y
1000 x 10/25
= 400 m.
Hence, the answer is (2) 400 m.

Anurag Mishra Professor Answered on 3rd August 2015.
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