Lizzy: Three frogs are trying to hop across the road. The first frog takes 4 times as many hops as the second. The second frog takes twice as many as the third. If the three frogs took a total of 99 hops, how many hops did it take the second frog to cross the road?.
Me: Hmmm, let me think. I think this is the detailed solution:
Let x represent the number of hops it took the third frog. The second frog:2x. First frog:4(2x) = 8x. Total:x + 2x + 8x = 99. 11x = 99. x = 9. Second frog:2(9) = 18 hops. Final answer: 18.