It seems the order of the hour doesn't matter. "Tertiam horam" and "horam tertiam" are accepted. Why does the order not matter here? I assumed "horam tertiam" was the only answer. Also, does the time always come first in the sentence?
It must be "coquus" (male?) ? I tried "coqua" and was marked wrong. My answer was: Coqua post tertiam horam coquit