Find the average of the numbers: 10, 20, 30, 40, 50.

The average height of 5 students is 160 cm. If one student of 150 cm is replaced with a new student, and the new average height is 162 cm, what is the height of the new student?

The average of four numbers is 50. If the first number is reduced by 5, the second by 10, and the third by 15, what will be the new average?

A cricketer's scores in 5 matches are: 40, 50, 60, 80, 100. What is his average score?

The average score of 20 students is 75. If 5 students scored an average of 80, what is the average score of the remaining 15 students?

Find the average of the numbers: 50, 55, 60, 65, 70, and 75.

What is the average of the first 10 natural numbers?

A man’s average expenditure for the first 4 months of a year is $1200. If his average expenditure for the next 8 months is $1000, what is his average expenditure for the whole year?

The average of three consecutive even numbers is 14. What is the smallest of these numbers?

The average of 16 numbers is 8. If 2 is added to each number, what will be the new average?