Two cars start from a place with a speed of 40 kmph at an interval of 10 minutes What is the speed o...........

Quantitative Aptitude ( CCS) Time & distance

Two cars start from a place with a speed of 40 kmph at an interval of 10 minutes. What is the speed of a man coming from the opposite direction towards the place if he meets the cars at an interval of 8 minutes?

10 kmph

13 kmph

14 kmph

16 kmph

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Explanation:

Solution:
Distance covered in 10 minutes at 60 kmph = distance covered in 8 minutes at (60+x) kmph.
40*10/60 = 8/60 * (40+x)
20 * 5 = 80 + 2x
x = 10 kmph