Problema Solution
The sum of the ages of Frank and Courtney is 74 years. 9 years ago, Frank's age was 3 times Courtney's age. How old is Frank now?
Answer provided by our tutors
let 'x' represent the current age of Courtney, then '(9+3(x-9))' represents the current age of Frank. The sum of both their ages are currently 74 years old.
74=x+(9+3(x-9))
x=23
74-23=51
Frank is now 51 years old.