Question

Find the third number if their average is 6 and two of them are 6 and 7​

Answer 1

Answer:

5

Step-by-step explanation:

If their average is 6 and there are three numbers in total, the total sum of the three numbers would be:

6×3 = 18

You know that two of them is 6 and 7, so you can find the last number easily.

18-6-7 = 5  

Answer 2

Answer:

5

Step-by-step explanation:

6 +7+5 = 18 and 18/3 = 6