kaylesparks2
03.02.2020 •
Mathematics
Two trains leaves stations 320miles apart at the same time and travel toward eachother. one train travels at 110 miles per hour while the other travels at 90miles per hour. how long will it take for the two trains to meet.
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Ответ:
x/110 = (320-x)/90
Cross multiply
90x = 35200-110x
200x=35200
X = 35200/200 = 176 (distance traveled by train going 110 mph
176/110 = 1.6 hours = 1 hour and 36 minutes
Check: 110*1.6 = 176, 90*1.6 = 144
176+144 = 320
it will take 1.6 hours ( 1 hour 36 minutes) for the trains to meetОтвет: