HrvdLilmommyg HrvdLilmommyg

06-10-2016
Mathematics

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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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lukasshaitzma lukasshaitzma

12-10-2016

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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