Question 626374
There are ten vehicles parked in a parking lot. Each is either a car with four tires or a motorcycle with two tires.There are 26 wheels in the lot. How many cars are in the lot?
<pre>
If all 10 vehicles were motocycles there would be only 20 wheels. 
 Since there are 26 the other 6 must belong to 3 cars.  So there are
3 cars and 7 motorcycles.

Edwin</pre>