The average age of 15 persons is 32 years. If two more persons are added, then the average is increased by 3 years. The new persons have age difference of 7 years. The age (in years) of the youngest among the new persons is:
Show answer & explanation
Correct answer: D
Explanation
Correct Answer is option 4 i.e. 54
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Understanding |
Application |
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Given: The average age of 15 persons = 32 And The average age of 17 persons = 32 + 3 = 35 |
Sum of age of 15 persons = 32 × 15 = 480 Sum of age of 17 persons = 35 × 17 = 595 Sum of age of 2 new persons = 595 – 480 = 115 Difference of 2 new persons = 7 Age of youngest person = (115 – 7)/2 = 54 |