Two cyclists A and B start from the same place at the same time. One going toward north at 18 km/hr. and other going toward south at 20 km/hr. What time will they take to be 95 km. apart?

4 hrs. 30 min.
4 hrs. 45 min.
5 hrs.16 min.
2hrs. 30 min

Correct Answer: 2hrs. 30 min

Explanation:

Relative velocity = u + v = 18 + 20 = 38 km
They are 38 km. apart in 1 hr.
∴ They will be 95 km. apart in ( 95 / 38) hrs.
= 2 hrs . 30 min

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