In a parking lot, there are cars and motorcycles.  Each car has 5 wheels (including one spare) and each motorcycle has 2 wheels. There are 19 cars in the parking lot. Altogether all vehicles have 117 wheels. How many motorcycles are at the parking lot?
There are 19 cars at the lot, so there are 5 * 19 = <<19*5=95>>95 wheels of cars.
So there are 117 - 95 = <<117-95=22>>22 wheels of motorcycles in the parking lot.
Each motorcycle has 2 wheels, so that leaves us with 22 / 2 = <<22/2=11>>11 motorcycles in the parking lot.
#### 11