The average age of 7 people is 62 years. When one more person joins, the average rises by 3 years. What is…

Averages · Quantitative Aptitude · Medium · Practice for SSC CGL Tier 1

The average age of 7 people is 62 years. When one more person joins, the average rises by 3 years. What is the age of the new person?

  1. 83 years
  2. 86 years
  3. 98 years
  4. 92 years
Answer and solution

Correct answer: B) 86 years

New total = 8 × 65 = 520; old total = 7 × 62 = 434; new person = 86 years.

Learn the method: Averages rules and worked examples · SSC CGL Tier 1 Quantitative Aptitude

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