Question

B. Lance is 39 years old. Ted is 22 years old.

Rosalinda is 45 years old. How old is Erik if the
mean age of the four friends is 33.5?​

Answer 1

28 years

Explanation:

Sum of the years of Lance , Ted, Rosalinda = 39 + 22 +45 = 106 year

Sum of the years of Lance , Ted, Rosalinda & Erik = 33.5*4 = 134.0 year

Age of Erik = 134 - 106 = 28 years