Question

The sum of the ages of 5 children born at the intervals of 3 years each is 50 year. what is the age of the youngest child?

Answer 1

$x + x - 3 + x - 6 + x - 9 + x - 12 = 50 \\ 5x - 30 = 50 \\ 5x = 80 \\ x = \frac{80}{5 } \\ x = 16$
youngest = x -12
16 - 12 =4
age of youngest child is 4 years

Answer 2

Answer:

Let the ages of children be x, (x + 3), (x + 6), (x + 9), (x + 12) years.

According to Question now,

➳ x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50

➳ 5x + 30 = 50

➳ 5x = 50 - 30

➳ x = 20/5

➳ x = 4 years

Therefore,the age of youngest child is 4 years.