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OpenStudy (anonymous):
the average of X,Y, and Z is 80. if two of the numbers are 74 and 78, then what is the other number?
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OpenStudy (anonymous):
to find the average you add all the numbers together and divide by the total of numbers so the equation you'd use for this is (74+78+X)/3=80 so to solve multiply by 3 then subtract 78 and 74 giving the answer of 88
OpenStudy (anonymous):
thank u
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