🧠✨ Brain Teaser Challenge: Guess the Sister’s Age!
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📖 The Puzzle (Read Carefully!)
👉 When I was 2 years old, my sister was twice my age.
👉 Today, I am 40 years old…
❓ So… how old is my sister now?
🔍 Let’s Break It Down Step by Step
🧮 Step 1: Go Back in Time
When I was 2 years old:
- My sister was twice my age
- That means: 2 × 2 = 4 years old
👉 So at that moment:
- Me = 2
- Sister = 4
⚖️ Step 2: Find the Age Difference
Now calculate the gap:
- 4 − 2 = 2 years
💡 This is the most important clue!
➡️ My sister is always 2 years older than me.
⏳ Step 3: Fast Forward to Today
Now I am 40 years old:
- Add the same difference:
👉 40 + 2 = 42
✅ Final Answer
🎉🎯 My sister is 42 years old.
💡 Why This Works
- Age differences never change over time
- Even if the ratio changes (twice, three times, etc.),
👉 the difference stays constant
🧠✨ Quick Visual Idea
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🔥 Challenge Yourself
Think you got it? Try this:
If I was 5 and my brother was 15, how old will he be when I’m 30?
(Answer: still 10 years older 😉)
