Question

the average of 3numbers is 20.if two of these numbers are 16and 21.then find the third number. ​

Answer 1

we Assume 3 numbers A,B,C

A=16

B=22

C=?

A+B+C/3=16+22+C/3=20

38+C/3=20

38+C=60

C=22

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Answer 2

The answer is given below