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Two planes leave Dallas at the same time. One heads east at a speed of 428 miles per hour. The other plane heads west at a speed of 382 miles per hour. How many hours will it take them to be 2,025 miles apart?

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  1. Today, 01:44
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    Let the # of hrs be h.

    Then (428 mph) (h) + (382 mph) (h) = 2025 miles

    Solve this for h. Divide (428+382) into 2025: h = 2.5 hours (answer)
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