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

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

Solution:
Let the age of the initially born children = x years old,
Then, according to the question,(প্রতিটি বাচ্চার বয়সের পার্থক্য ৩ বছর করে তাই)
The ages of children be x, (x + 3), (x+3+3)= (x+6), (x+6+3)= (x + 9) and (x+9+3)=(x + 12) years.

Then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50
⇒ 5x+ 30 = 50
⇒ 5x = 20
⇒ x = 4

Age of the youngest child ⇒ x = 4 years.