Simple

 is the twenty-first level of Even More Bloons. To complete the level, the user have to aim at the Helium Bloon and hits the rubber block hard, then the dart that bounces almost vertically and pops both bloons.

Level overview
The level shows a monkey located at the left side and a regular bloon is three tile above a Helium Bloon which is trapped in a jar. There are also three angled rubber block located at the right side of the bloons.