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25 March, 19:37

A jet flies from New York to Los Angeles, a distance of 2,450 miles, and then flies back. The speed from NY to LA was 140 mph faster than the speed from LA to NYIf the total time in the air was 12 hours, what was the jet's speed from NY to LA?

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  1. 25 March, 22:05
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    Speed from NY to LA is 172 mph

    Step-by-step explanation:

    Let the jet's speed from NY to LA be x mph. The speed form NY to LA would be (x-140) mph

    Mathematically, we know that distance = speed * time

    The total speed will x + x - 140 = 2x-140

    Now;

    12 (2x-140) = 2450

    24x - 1680 = 2450

    24x = 2450 + 1680

    24x = 4130

    x = 4130/24

    x = 172.1 which is approximately 172 mph
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