Premise:
"If the two subclasses were given different proportionate markups, rather than the 50% markups in the example just completed, the comparisons would not be so simple."
Hypothesis: The comparisons would not be so simple if the two subclasses were given different proportionate markups.

yes

Premise:
"i'm an interior design major yep so exactly in May"
Hypothesis: Interior design is a major.

yes

Premise:
"Horse races are held every Sunday, all the year round, at the tracks (Hipodrom) at Son Pardo near Palma, and near Mahon and Ciutadella."
Hypothesis: The tracks have no horse races in the winter.
no