I need the answer to 22. & 23. Please

A publisher uses four different printers for their books: Bookmaster, Sheridan, Brilliant and Thomson. 35% of books are from Bookmasters, 25% are from Sheridan, 10% are from Brilliant and 40% are from Thomson. Each printer has a different rate of misprints. 2% of books printed at Bookmasters are misprinted. 1% of books printed at Sheridan are misprinted. 4% of books printed at Brilliant are misprinted. 3% of books printed at Thomson are misprinted. When the books arrive they are put on a shelf and not separated. They are all mixed together. 21 ) A worker selects a book randomly and that book is misprinted. What is the probability that it is from Thomson? a 47 b) .03 C) .012 d) .15 22) What is the probability that the book is misprinted and from Sheridan? a) .09 b) .0025 C) .007 d) .01 23) What is the probability that the book is printed with no error and from Bookmaster? a) .27 b) .45 C) .343 d) .02