Use the table to write and solve an equation to find the number of cars c that a salesperson needs to sell in the fourth month so that

Question

Use the table to write and solve an equation to find the number of
cars c that a salesperson needs to sell in the fourth month so that
the salesperson’s mean number of cars sold per month is 10.
Month 1 2 3 4
Cars Sold 8 9 12 c

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Xavia 3 years 2021-08-30T19:18:53+00:00 1 Answers 18 views 0

Answers ( )

  1. Jezebel
    0
    2021-08-30T19:20:21+00:00
    Reply

    Answer:

    c = 11

    Step-by-step explanation:

    Given

    Cars\ Sold:-: 8; 9; 12; c

    Required

    What value of c makes the mean = 10

    Mean is calculated as

    Mean = \frac{\sum x}{n}

    In this case;

    Mean = 10 and n = 4;

    So, we have:

    10 = \frac{8+ 9 + 12 + c}{4}

    10 = \frac{29+ c}{4}

    Multiply both sides by 4

    10 * 4 = 29 + c

    40 = 29 + c

    Solve for c

    c = 40 - 29

    c = 11

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