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18 September, 01:47

2 cars are 700 miles apart. They travel toward each other. One of the cars travels at 75mph, the other travels at 100 mph. How long will it take them to meet? A. 10 B. 3/28 C. 4 D. 28

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  1. 18 September, 02:11
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    Answer: C 4

    Step-by-step explanation:

    Use the formula: distance = rate x time

    We can say that train 1 travels a distance of x, and train 2 travels a distance of 700 - x

    The rate of train 1 is 75 mph, and the rate of train 2 is 100 mph

    The time traveled for the two trains will be the same. We can represent that with the variable t.

    We have the following equation for train 1:

    x = 75t

    For train 2, we have this equation:

    700 - x = 100t

    Use the Substitution Method by replacing x in the equation for train 2 with the value 75t.

    700 - 75t = 100t

    700 = 175t

    700/175 = 4 hours.

    It will take 4 hours for the two trains to meet.
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