The average age of a husband, wife, and their child 3 years ago was 27 years. What is the present age of the husband?

The average of 6 scores is 40. If one score is removed, the new average is 42. What was the score removed?

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?

The average of 20 numbers is zero. What is the maximum number of numbers that can be greater than zero?

The average of 10 observations is 50. If one observation, 45, is replaced with 60, what will be the new average?

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

The average of three numbers is 15. If the first number is 5 and the second number is 10, what is the third number?

What is the average of the first five multiples of 3?

The average of runs of a cricket player in 10 innings was 32. How many runs must he make in his next innings to increase his average by 4?

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