I am twice as old as my brother was when I was as old as he is now. If I am 30 years old, how old is my brother?
Category: Math · Difficulty: medium
Hint: Consider the age difference between you and your brother.
Answer
20
Explanation
The age difference is 10 years. When I was 20, my brother was 10. Thus, he is currently 30 - 10 = 20.
This is a medium math riddle — a moderate challenge for most people. The answer is 20.
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