Question

the average of three number is 12. if two of the number is 13 and15 then which is the third number​

Answer 1

here the average of  three no. are 12

and two no. are 13 and 15, let the third no. be x

according to question,

  13+15+x /3=12

 28+x=36

x=36-28

x=8

hence the third no. be 8.

Answer 2

Answer:

8

Step-by-step explanation:

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