Question

the average age of 3 boys is 14 years if the age of two of them are 16 years and 19 years then the age of the third boy is​

Answer 1

Answer:

$\frac{16 + 19 + x}{3} = 14 \\ 35 + x = 14 \times 3 \\ 35 + x = 24 \\ 35 - 24 = x \\ 11 = x$

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Answer 2

Answer:

the average age of 3 boy is 14

sum of 3 boys is 14 × 3 = 42

the age of the third boy will be

=42 - (16+19)

=42-35

=7