Mastering Age and Averages

What is the average age of a group of 5 people with ages 20, 22, 24, 26, and 28?

• 24

• 22

• 30

• 26

If John is 4 years older than Mary and Mary is 3 years younger than Tom, how old is Tom if John is 25?

• 27

• 22

• 30

• 24

A family has three children aged 10, 12, and 14. What is the average age of the children?

• 13

• 12

• 11

• 15

If the average age of a group of 4 friends is 20 years, what is their total age?

• 60 years

• 40 years

• 80 years

• 100 years

Sarah is twice as old as her brother. If the brother is 10 years old, how old is Sarah?

• 15

• 20

• 25

• 30

The average age of a class of 30 students is 18 years. What is the total age of all students in the class?

• 540 years

• 480 years

• 450 years

• 600 years

If Alice is 5 years older than Bob and Bob is 15, how old is Alice?

• 25

• 15

• 18

• 20

A group of 6 people has an average age of 30 years. If one person leaves the group, and the new average age is 31, how old was the person who left?

• 25

• 28

• 22

• 32

If the sum of the ages of three siblings is 60 years, and the oldest is 10 years older than the youngest, what are their ages?

• 20, 25, 15

• 12, 18, 30

• 15, 20, 25

• 10, 20, 30

The average age of a team of 5 players is 25 years. If one player is 30 years old, what is the average age of the remaining players?

• 23.75 years

• 24 years

• 22 years

• 26 years