The average age of 7 people is 52 years. When one more person joins, the average rises by 1 year. What is…
The average age of 7 people is 52 years. When one more person joins, the average rises by 1 year. What is the age of the new person?
Answer and solution
Correct answer: A) 60 years
New total = 8 × 53 = 424; old total = 7 × 52 = 364; new person = 60 years.
Learn the method: Averages rules and worked examples · SSC CGL Tier 1 Quantitative Aptitude
Similar questions
- The average age of 9 people is 21 years. When one more person joins, the average rises by 1 year. What is the age of the new person?
- The average age of 6 people is 55 years. When one more person joins, the average rises by 2 years. What is the age of the new person?
- The average age of 8 people is 20 years. When one more person joins, the average rises by 1 year. What is the age of the new person?
Practise more Averages questions in a timed mock · Report an error