Login / Signup

Question

The average age of a group of 9 teachers is 50 years. When the principal retires, the average age of the remaining teachers drops to 45 years. Find the age of the principal.

A 80 years

B 85 years

C 90 years

D 95 years

Practice Next

More Average Questions

The average of 12, 33, and x is 25. What is the value of x?
The average of four numbers is 150. Two of the numbers are equal (not least), and 50 more than the least number. If the 4th number is twice the least numbe...
The average expenditure of a man for the first five month is Rs.14000 and for the next seven months is Rs.12000. If he saves 17000 in that year then find h...
The average of six numbers is 82. When two more numbers are included, the average increases by 4. Find the average of the numbers included.
Average run scored by a batsman in 18 innings is 60. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases by 3. F...
The average number of candies distributed among five children is 6. If each child received 1 candy more than the child before, then find the highest number...
There are three numbers such that when the average of any of the two numbers is added with the third number, sum obtained will be 110, 114 and 118. Find th...
The average cost price of 13 pens (having equal cost price) decreased by Rs.3, when one of the pen is replaced by a new pen having cost price of Rs.60. Fin...
The average weight of a group of 30 employees is 65 kg. If an additional five employees, each with an average weight of 72 kg, are added to the group, what...
Four numbers, when arranged in ascending order, are w, x, y and z. The average of the smallest three numbers is 25.5 while the average of the largest three...

Hey! Ask a query

ask-question