Answer:
corollary,postulate,theorem,definition
The half of 3/4 is 0.375, or 3/8. All you have to do is multiply 3/4 times 1/2.
11. 9/20
12. 13/20
13. 12/20
that's if it doesn't have to be in percentage form
If 15 is 1/4 of an hour then multiply 12 with 4. It’s 48, they can hang 48 sheets in an hour.