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20-09-2017
Mathematics

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what is the fourth number of 12 48 50 if the mean is 30

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AnimeBrainly AnimeBrainly

20-09-2017

(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

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