Math- Multi-step word problems

A plane traveling from Chicago to Boston with a tailwind of 10 miles per hour takes 4 hours. The return trip in the same wind, which is now a headwind, takes the same plane 4 hours and 9 minutes. According to this problem, about how far is it from Chicago to Boston?
1800 miles
2000 miles
2200 miles
2500 miles

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  1. If the plane's speed is s, then since distance = speed * time,

    4(s+10) = 4.15(s-10)
    That gives s=543.33

    553.33*4 = 2213
    533.33*4.15 = 2213

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  2. thanks steve

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