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lizbethmillanvazquez
02.08.2019 •
Mathematics
Atrain leaves new york at 4: 00pm.a second train leaves the same city in the same direction at 6: 00pm. the second train travels 24 mph faster than the first. if the second train overtakes first at 10: 00pm, what is the speed of each of the two trains first train ? second train ?
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Ответ:
first train leaves at 4 and meets with second at 10 so it traveled 6 hours
second train leaves at 6 and meets the first at 10 so it traveled 4 hours
6 hours ·rate of first = distance traveled until they meet
4 hours (rate of first +24) = distance traveled until they meet
Yet both trains traveled the same distance so
6 hours ·rate of first =4 hours (rate of first +24)
6 hours ·rate of first -4 hours ·rate of first= 24·4
2·rate of first=96
rate of first train =96/2=48 mph
rate of second train =48+24=72 mph
Ответ:
i dont speak or type spanish
Step-by-step explanation: