The average age of a class of 6 girls is x years. Four new girls of ages x - 2, x + 2, x + 4 and x + 6 join the class. What is the new average age (in years) of the class?
Reveal answer
Fill a bubble to check yourself
The average age of a class of 6 girls is x years. Four new girls of ages x - 2, x + 2, x + 4 and x + 6 join the class. What is the new average age (in years) of the class?