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Average - Data Intensity 2 :: Discussion

1.	The average age of P, Q, R and S is 30 years. How old is R?
	A.	I alone sufficient while II alone not sufficient to answer
	B.	II alone sufficient while I alone not sufficient to answer
	C.	Either I or II alone sufficient to answer
	D.	Both I and II are not sufficient to answer

	Answer: Option D


	Explanation:
	P + Q + R + S = (30 x 4) P + Q + R + S = 120 .... (i) I. P + R = 60 .... (ii) II. S = (R - 10) .... (iii) From (i), (ii) and (iii), we cannot find R. Correct answer is (D)



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Published by:Michael Daani

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