A. 3 years
B. 9 years
C. 8 years
D. 7 years
🧠 Explanation (Math):
Given: 5 children, each 3 years apart; sum ages = 50; youngest? Step 1: Let youngest = x ⇒ ages x, x+3, x+6, x+9, x+12 Step 2: Sum = 5x + 30 = 50 Step 3: 5x = 20 ⇒ x = 4 Check: Sequence 4,7,10,13,16 sums to 50 Final Answer: 3 years