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What is the age of Teja? A: Four years ago, Raju was as old as Teja is at present. B: Sita’s present age is two times of Raju’s present age. C: The average age of Teja and Sita is 19 years.

Any two statements are sufficient to give answer
Only C is sufficient
All of three statements are necessary to give answer
Even using all the three statements answer cannot be found

Correct Answer: All of three statements are necessary to give answer

Explanation:

From the given statements A, B & C

Let the present age of Teja = P

Raju present age = P + 4

Sita's present age = 2(P + 4)

Average of ages of Sita & Teja = 19

=> (2P + 8 + P)/2 = 19

= 3P + 8 = 38

=> P = 30/3 = 10

Hence, the present age of Teja = P = 10 yrs.

Therefore, by using all the three statements A, B & C we can find the age of Teja.

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