A and B are 20 km apart. A can walk at an average speed of 4 kmhour and B at an average speed of 6 km/hour. If they start walking towards each other at 7 a.m, at what time will they meet
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Step-by-step explanation:
Their relative speed in opp. direction
=4+6 = 10 km/hr
Time will be taken to cover 20 km with relative speed 10 km/ hr
Time = 20 km10 km/h = 2 hours
∴Meeting time
= 7am+2hr.
= 9 am
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