There are several possible approaches to this problem. You could guess and
check, or make a systematic list, or work backwards, or use algebra!
However you do the problem, you can consider situations where three of the
four conditions (Jamie's salary, Lynn's salary, the fact that they made
the same amount of money, and the fact that Lynn worked 5 more days than
Jamie). Then figure out how many days they worked will result in the other
condition being satisfied.
After you solve this one, you might enjoy making up similar problems to
share with others.
As always, be sure to explain the
work you did to arrive
at your answers!