Subject: General Aptitude · Chapter: Average · Exam: · Marks: · Difficulty:
The average age of P, Q, R and S is 30 years. How old is R? (R.B.I., 2003) I. The sum of ages of P and R is 60 years. II. S is 10 years younger than R.
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.