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?
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=9>>9
Second frog:2(9)=18 hops
#### 18