falarose falarose

18-08-2016
Mathematics

Answered

Three of four numbers have a sum of 22. If the average of

the four numbers is 8, what is the fourth number?

A4
B6
C8
D10

Verified Answer :

18-08-2016

-- If the average of 4 numbers is 8, then they must all add up to 32 .

-- If 3 of them add up to 22, then the 4th number is 10 .

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