La tercera parte de un número, menos 2 el triple de un níumero, más la mitad de otro número el doblede la diferencia de dos números

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?

How do you solve a question like this?

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .