Login / Signup

Question

span >The average age of a group of 12 persons is found to be 20 years. Later it is found that age of two of the persons is calculated as 10 and 11 instead of 12 and 9. Find the correct average age of the group.

A 20 years

B 29 years

C 30 years

D 22 years

E None of these

Practice Next

More Average Questions

The average of two consecutive even numbers is 81. If the smaller number is increased by 15% and the larger number is decreased by 15%, then find the diffe...
The average wage of a group of 44 labourers is Rs. 250. If 4 persons receiving average wage of Rs. 275 leave the group and 2 persons receiving average wage...
In a cricket match the captain of one of a team scored 26 runs more than the average runs scored by the remaining 6 batsmen of that team who batted in the ...
The average of 8 consecutive even numbers written in ascending order is 17. What is the average of the last three numbers, 36 and 53 ?
If the average of 13 different numbers is 15, and if all the numbers are positive integers then what is the largest possible value of the average of the 2 ...
The average of two numbers is 5 more than the smaller number among them. If the greater number is 60% more than the smaller number, then find the sum of th...
In a cricket match the captain of one of a team scored 25 runs more than the average runs scored by the remaining 9 batsmen of that team who batted in the ...
In a company, the average salary of 30 employees is ₹40,000. Out of these, the average salary of 20 employees is ₹35,000, and the average salary of 5 other...
The average age of 12 students is 15 years. If the age of the teacher is also included, the average increases by 1 year. Find the teacher's age.
The average marks of 'm' students in a math test is (m + 5) and the average marks of 30 girls is (2m - 10). If the average marks of all students together i...

Hey! Ask a query

ask-question