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What is the fourth number of 12 48 50 if the mean is 30
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Jul 21, 2018
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What is the fourth number of 12 48 50 if the mean is 30
Mathematics
middle-school
Helvio
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(12 + 48 + 50 + x)
------------------------ = 30
4
(110 + x)/4 = 30
110 + x = 30 x 4
110 + x = 120
x = 120 -110
x = 10
fourth number should be 10
hope this helps
Awilda
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Jul 24, 2018
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Awilda
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