En un estacionamiento hay 55 vehículos entre coches y motos. si el total de ruedas es de 170. cuantos coches y cuantas motos hay?

Let  be the number of cars (coches) and  the number of motorbikes (motos).
We know that sum of cars and motorbikes is 55, so:
equation (1)
We can infer that the a car has 4 wheels and a motorbike has 2 wheels.Since the total number of wheels is 170, the sum of the car's wheels and the motorbike's wheels is 170:
equation (2)

Solving for  in equation (1):

equation (3)

Replacing equation (3) in equation (2):





equation (4)

Replacing equation (4) in equation (3):




We can conclude that there are 30 cars and 25 motorbikes in the parking lot.
Podemos concluir que hay 30 coches y 25 motos en el estacionamiento.

Letter b sorry i’m i’m wrong xx