Two cars X and Y start at the same point and travel towar...
Two cars X and Y start at the same point and travel towards a point P which is 150km away. If the average speed of Y is 60km per hour and x arrives at P 25 minutes earlier than Y. What is the average speed of X?
5137km per hour
72km per hour
3712 km per hour
66km per hour
75km per hour
Correct answer is B
Distance travelled by both x and y = 150 km.
Speed of y = 60km per hour, Time = dist.Speed
Time spent by y = 15060
= 236hrs
= 12 hrs
if x arrived at p 25 minutes earlier than y, then time spent by x = 2 hour 5 mins
= 125 mins
x average speed = 150125 x 601
= 9000125
= 72 km\hr
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