Question 947873
two trains travel at speeds of 72 km/h and 48 km/h respectively. if they start at the same time and travel towards each other from two places 600 km apart, how long will it be before they meet
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72+48=120 km/h=speed at which the two trains are moving toward each other
travel time=distance/speed=600/120=5 
how long will it be before the two trains meet? 5 hrs