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6 December, 09:14

The mean of four numder is 30. if three of the numbers are 12, 50, and 48, what is the fourth number

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  1. 6 December, 09:30
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    If the mean of 4 numbers is 30 then that means that the total of all the numbers added together must add up to 120 (30 x 4)

    then you subtract the three numbers that you have from the total

    120-12-50-48 = 10

    so the last number is 10
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