Step 1:
Y + Y + Y = 600
3Y = 600
Y = 200

Step 2:
Y − X² = 100
200 − X² = 100
X² = 100
X = 10 (taking the positive value)

Step 3:
Y + X ÷ 5 = ?

Using the order of operations, division comes before addition:

10 ÷ 5 = 2

200 + 2 = 202

✅ Final Answer: 202