The average of 3 numbers is 7 and average of first two numbers is 4. what is the third number?

The average of 3 numbers is 7 and average of first two numbers is 4.

1.	The average of 3 numbers is 7 and average of first two numbers is 4. what is the third number?
A.	15
B.	13
C.	7
D.	4
Answer» C. 7

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The average of 3 numbers is 7 and average of first two numbers is 4. what is the third number?

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