Algebra

train X travels west at 50 mph and train Y travels east at 40 mph. train X leaves at 2 p.m. and train Y leaves at 1 p.m. train X is located 100 miles east of Durham and train Y is located 75 miles west of Durham. which train will get to Durham the earliest?

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  1. At 2 PM, train Y is 35 miles from Durham with 35 miles to go. 35/40 = .875 hr for a total trip time of 1.875 hr.
    X reaches Durham in 100/50 = 2 hr.

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