Question

5. The average age of three brothers is 15 years. If the age of two brother
15 years and 12 years, find the age of the third brother.
here family are 4 m 60cm​

Answer 1

Answer:

Step-by-step explanation:

The average age of three brothers = 15

Age of two brothers = 15 years and 12 years

Let the age of third brother be x

Average = Sum of observation/No. of observations

15 = 15 + 12 + x/3

15 = 27 + x/3

15 x 3 = 27 + x

45 = 27 + x

45 - 27 = x

18 = x

Therefore, the age of third brother is 18 years