Two cars are 15 kms apart. One is moving at a speed of 50kmph and the other at…
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Two cars are 15 kms apart. One is moving at a speed of 50kmph and the other at 40kmph in the same direction. How much time will it take for the two cars to meet?
- A.
5/2 Hours
- B.
1/6 Hours
- C.
2/3 hours
- D.
3/2 hours
Attempted by 51 students.
Show answer & explanation
Correct answer: D
Solution:
Assume the car moving at 50 km/h is behind the car moving at 40 km/h by 15 km.
Relative speed = 50 km/h − 40 km/h = 10 km/h.
Time = distance / relative speed = 15 km / 10 km/h = 15/10 = 3/2 hours = 1.5 hours.
Therefore, the two cars will meet after 3/2 hours (1.5 hours).