The average age of 6 people is 49 years. When one more person joins, the average rises by 3 years. What is…
The average age of 6 people is 49 years. When one more person joins, the average rises by 3 years. What is the age of the new person?
Answer and solution
Correct answer: D) 70 years
New total = 7 × 52 = 364; old total = 6 × 49 = 294; new person = 70 years.
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