Lizzy: Trey has 7 times as many turtles as Kris. Kris has 1/4 as many turtles as Kristen has. How many more turtles does Trey have than Kristen, if Kristen has 12?.
Me: Hmmm, let me think. I think this is the detailed solution:
Kris has 12 / 4 = 3 turtles. Trey has 3 * 7 = 21 turtles. Trey has 21 - 12 = 9 more turtles than Kristen. Final answer: 9.