A tricycle and a bicycle start from the same point at the same time and travel in the opposite directions. The tricycle averages 30 km/h and the bicycle at 20 km/h. In how many hours will they be 100 km apart?
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Answer:
Answer is 2 hours
Explanation:
since average speed of tricycle is 30 km/h thus it will travel let assume for X hours then the bicycle will travel with average of 20km/h for X hours too.
now we know that distance is equal to speed × time
so the distance covered by tricycle = 30×X
distance covered by bicycle =20×X
total distance 100 km = 30X+20X
50X=100
X=2 hours...
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