May somebody please help me and answer those

12 is 33 1/3% of 36 what is the whole

The highest common factor of 132 and 220

Shryia read a 481 -page-long book cover to cover in a single session, at a constant rate. after reading for 1.5 hours, she had 403 pages left to read. how fast was shryia reading? pages per hour how long did it take her to read the entire book? hours plz i realy need this