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20 April, 05:41

A car travels at an average speed of 40 miles per hour for the first 100 miles of a 200-mile trip, and at an average speed of 50 miles per hour for the final 100 miles. what is the car's average speed for the entire 200-mile trip?

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  1. 20 April, 06:05
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    Total distance = 200 miles

    Time needed for the first 100 miles

    = 100 : 40 = 2.5 hours

    Time needed for the second 100 miles

    = 100 : 50 = 2 hours

    Total time = 2.5 + 2 = 4.5 hours

    Average speed = 200 : 4.5 hours = 44.4 miles per hour
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