A parking lot contains a total of 52 cars and motorcycles. There are a total of 186 tires (not counting spare tires) in the lot. Assuming each car has 4 tires and each motorcycle has 2 tires, determine how many cars and how many motorcycles are in the parking lot.

Answer 1

cars ---- x
bikes ----y

x+y = 52

4x + 2y = 186 or
2x + y = 93

subract:
x = 41
then 41 + y = 52 ---> y = 11

There are 41 cars and 11 bikes.