Question 693184

Tom is 3 years older than Mary and Jane is 5 years older than Tom. What is the average age?


Let Mary's age be M
Then Tom's is: M + 3, and Jane's is: M + 3 + 5, or M + 8


Sum of their ages = M + M + 3 + M + 8, or 3M + 11


Average age = {{{highlight_green((3M + 11)/3)}}}, or {{{highlight_green(M + 11/3)}}}