Tim is 5 years old. His cousin, Rommel, is thrice as old as he is. His other cousin, Jenny, is 2 years older than Rommel. How many years younger is Tim than Jenny?
Rommel is 5 x 3 = <<5*3=15>>15 years old.
Jenny is 15 + 2 = <<15+2=17>>17 years old.
So, Tim is 17 - 5 = <<17-5=12>>12 years younger than Jenny.
#### 12