If the average age of three friends is 20, and one is 18, what is the age of the other two combined?
Category: Math · Difficulty: medium
Hint: Consider how averages work.
Answer
42
Explanation
If the average is 20, the total age is 60. Subtracting 18 from 60 gives 42.
This is a medium math riddle — a moderate challenge for most people. The answer is 42.
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