1.

The average age of 3 friends is 32 years. If the age of a fourth friend is added, their average age comes to 31 years. What is the age of the fourth friend ?(a) 32 years (b) 28 years (c) 24 years (d) 26 years (e) None of these

Answer»

(b) Age of the fourth friend = 31 × 4 - 32 × 3
= 124 - 96 = 28 years



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