The average age of three brothers is 6 year if the age of two brothers are 6 years and 7 years find the age of third brother
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Answer:
The age of the third brother is 5.
Step-by-step explanation:
Let the age of the third brother be x
- The average = sum of the ages of the three brothers/3
- 6 = 6 + 7 + x/ 3
- 6 = 13+x/3
- 6×3 = 13+x
- 18 = 13+x
- 18 - 13 = x
- 5 = x
Therefore, the age of the third brother is 5.
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