Mathematics, 30.10.2020 18:50 raven1619
A train goes twice as fast downhill as it can go uphill, and 2/3 as fast uphill as it can go level ground . If it goes 120 miles per hour downhill, how long will it take to travel 45 miles on flat land?
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A train goes twice as fast downhill as it can go uphill, and 2/3 as fast uphill as it can go level g...
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