you have 212 wheels and 180 brakes. 2 brakes per vehicle. how many motorcycles and 4-wheelers do you have?
x motorcycles and y 4 wheelers 2x + 4y 212 wheels 2x + 2y 180 brakes subtract the 2nd equation from the top one and you get 2y 32 or y 16 so you have 16 4-wheelers. Plug 16 in for y and solve for x (or motorcycles) and you get 74 motorcycles.
2 brakes per. 180 total gives you 90
I have one motorcycle, and one car (it has 4 wheels). How many do you have?
