What is the average of all prime numbers between 30 and 50?

The average temperature of a city over 5 days was 28°C. If the temperature on the first 4 days was 27°C, 29°C, 26°C, and 30°C, what was the temperature on the 5th day?

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 8 numbers is 20. If each number is increased by 4, what is the new average

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

A man’s average monthly salary for 10 months is $2000. How much does he need to earn in the next month to increase his average by $100?

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?

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

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