Two cars start out simultaneously from a point in the same direction, one of them going at a speed 50kmph and the other at 40kmph. In half an hour a third car starts out from the same point and overtakes the first car 1.5 hours after catching up with the second car. Find the speed of the third car.
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50*1/2=25m
40*1/2=20m
CAR A IS BEHIND CAR B BY 5m
CAR C OVERTAKES CAR B IN 3/2 hrs
25= Ubct+
25=(UB-UC)3/2
50/3= 50-UC
UC=100/3m/s
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Answer:
the speed of the third car is 60km/h
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