The average ages of (P,Q) ; (Q,R) ; (R,P

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Average

Question:

The average ages of (P,Q) ; (Q,R) ; (R,P) are 13, 14 and 12 years respectively. What is the age of Q?

Options:

13 years

15 years

12 years

11 years

Correct Answer:

15 years

Explanation:

Sum of age of ,

P + Q = 2 × 13 = 26 years

Q + R = 2 × 14 = 28 years

P + R = 2 × 12 = 24 year

On adding all

2( P + Q + R ) = 78

P + Q + R = 39

Age of Q = 39 - 24 = 15 years