Hmmm.. That looks right to me. Sometimes, teachers will use calmada instead of tranquila. You can ask if that is the case here. Otherwise its possible that the teacher made a mistake. If you are still confused, I would just as whoever your teacher is. I'm sure its a mistake on their part :)
Good luck!!
Answer:
B- Vamos a poner la silla en el comedor.
Explanation:
The student is explain where to put the chair.
This means that 1 cm on the map represents an actual distance of 50 000 cm if a map has a scale of 1 : 50000, then 1 cm on the map is 50000 cm in real life. (a) The distance between two points in real life is 7 km.
