GATE 2025 XH5 (Psychology) – Question 17
P is three years younger than R but one year older than S.
S is one year older than Q but 4 years younger than R.
R is 15 years old.
The age of Q is ____ years (answer in integer).
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Show answer and explanation
Correct answer: 10
Explanation
R is 15, so P is $15 - 3 = 12$. P is one year older than S, so S is 11 (which agrees with S being 4 years younger than R). S is one year older than Q, so Q is 10.