In Spanish, when the comparative "Better than" is used in a sentence, it means that something has more use than other one.
In this case, the operation of two elements of daily use for the cleaning of clothes is compared.
And since "Better than" is used, it compares that the washer is more useful for doing an action than the dryer. That is why in Spanish better than is translated as "<em>Mejor que</em>"
What does Gaston and Lucia decide to do? follow the recommendation of WHO? Why gastón and lucía want to get tickets for students? How and when can they get tickets for students? What happens when they arrive at the school office? What do they ask the secretary? Do you think they get the tickets?