500 people live in a housing society. Their average age is 30 years. 1

1.	500 people live in a housing society. Their average age is 30 years. 125 people go out of town during the holidays, raising the average age of the remaining people two years. What will be the average age of those who leave in vacation?1. 22 years2. 24 years3. 20 years4. 26 years
Answer» Correct Answer - Option 2 : 24 years Given : Total of 500 people live in a society Their average age is 30 years 125 people go out for a holiday Formula used : Average = Total value of all observations/Number of observations Calculations : Sum of the age of all people = 500 × 30 = 15000 years Remaining people who stays at society = 500 - 125 = 375 Sum of the age of remaining people = 375 × 32 (Age increased by 2 years) ⇒ 12000 years Sum of age who left for vacation = 15000 - 12000 ⇒ 3000 The average age of people left for vacation = 3000/125 ⇒ 24 years ∴ The average age of the people who leave for vacation is 24 years

500 people live in a housing society. Their average age is 30 years. 125 people go out of town during the holidays, raising the average age of the remaining people two years. What will be the average age of those who leave in vacation?1. 22 years2. 24 years3. 20 years4. 26 years

Answer» Correct Answer - Option 2 : 24 years

Given :

Total of 500 people live in a society

Their average age is 30 years

125 people go out for a holiday

Formula used :

Average = Total value of all observations/Number of observations

Calculations :

Sum of the age of all people = 500 × 30 = 15000 years

Remaining people who stays at society = 500 - 125 = 375

Sum of the age of remaining people = 375 × 32 (Age increased by 2 years)

⇒ 12000 years

Sum of age who left for vacation = 15000 - 12000

⇒ 3000

The average age of people left for vacation = 3000/125

⇒ 24 years

∴ The average age of the people who leave for vacation is 24 years

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