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18 August, 15:01

A plane flew for six hours. For two hours the average speed was 264mph. For four hours the average speed was 490mph. How far did the plane travel in six hours?

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  1. 18 August, 15:17
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    2488 miles

    Step-by-step explanation:

    The relevant relationship is ...

    distance = speed * time

    For each leg ...

    distance 1 = (264 mi/h) * (2 h) = 528 mi

    distance 2 = (490 mi/h) * (4 h) = 1960 mi

    Then the total distance traveled in the 6 hours is ...

    distance traveled = distance 1 + distance 2 = 528 mi + 1960 mi

    distance traveled = 2488 mi
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