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.

The academic affairs council is the highest expert body processing academic affairs, as stipulated by the university statutes. specialist aaro häkkinen (educational policy) took part in the council’s meeting. the agenda of the meeting included bachelors’ feedback, the timing of pedagogical studies, the grant system for tuition fees, the standardisation of administrative practices for internships and the situation of foreign-language and multilingual master’s programmes.