The average of 6,10,x,20 and 30 is 18. what is the value of x​

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The average of 6,10,x,20 and 30 is 18. what is the value of x​

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Thu Nguyệt 3 years 2021-08-02T17:46:55+00:00 2 Answers 402 views 1

Answers ( )

  1. thanhha
    1
    2021-08-02T17:48:50+00:00
    Reply

    Answer:

    x = 24

    Step-by-step explanation:

    6 + 10 + x + 20 + 30 = 18

    There are 5 numbers that we must add to average out to get 18 so let set this equation up

    \frac{6 + 10 + x + 20 + 30}{5} = 18

    6 + 10 + x + 20 + 30 = 90

    x = 24

  2. sori
    0
    2021-08-02T17:48:50+00:00
    Reply

    Answer:

    24

    Step-by-step explanation:

    18 times 5 is 90 so that means that the given numbers have to add up to 90 (including x)

    so,

    6+10+20+30=66

    90-66=24

    I hope this helps!

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