Word Problems
posted by CA .
Joe has $19 more than Erin, Shelly has twice as much as Erin; Colin has $6 less than Erin has. In total, the students have $68. How much money does each separate student have?

E = Erin
E + E + 19 + 2E + E  6 = 68
5E + 13 = 68
5E = 55
E = 11
Take it from there.