Three years ago the average of A and B was 18 Years. With C joining them now, the average becomes 22 years. How old is C now?  Pick one.
A) 24 years B) 27 years C) 28 years D) 30 years E) 32 years
(a+b)/2=18   (a+3+b+3+c)/3=22   (3+3+36+c)/3=22   c=24   24 yearsNSWER:24 years
<result>A</result>
Three years ago the average of A and B was 18 Years. With C joining them now, the average becomes 22 years. How old is C now?