Question 1 of 12, Step 1 of 1 0/17 Correct Two planes, which are 2800 miles apart, fly toward each other. Their speeds dif

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Question 1 of 12, Step 1 of 1
0/17
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Two planes, which are 2800 miles apart, fly toward each other. Their speeds differ by 50 mph. If they pass each other in 4 hours, what is the sspeed of each?
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Nick 1 year 2021-07-24T02:53:46+00:00 1 Answers 11 views 0

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    2021-07-24T02:55:37+00:00

    Answer:

    325 and 375 mph

    Step-by-step explanation:

    Given :

    Distance between plane A and B = 2800

    Recall :

    Distance = speed * time

    Let speed of A = v1

    Speed of B = v2

    v1 = v2 + 50

    Time taken = 4 hours

    Distance = speed * time

    Total distance = 2800

    2800 = v1 * 4 + v2 * 4

    2800 = (4v1) + (4v2)

    2800 = 4(v2+50) + 4v2

    2800 = 4v2 + 200 + 4v2

    2800 = 8v2 + 200

    2800 – 200 = 8v2

    2600 = 8v2

    v2 = 2600/8

    v2 = 325 mph

    v1 = v2 + 50

    v1 = 325 + 50

    v1 = 375 mph

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