38.In science lab 20 out of 25 students wore protective glasses. The other 5 students filled out lab reports. Which decimal number is equivalent to the fraction of students who did Not wear protective glasses?

A.0.25
B.0.80
C.0.50
D.0.20
A

39.Nik is coloring holiday ornaments for his tree. He can color 3 ornaments in 15 min. If he continues at this rate how many ornaments can he color in 1 1/4 hours?
I don't know how to solve this one but in 1 hour she can paint 12 ornaments.
How do I solve 1/4 of an hour?