Greater because if you have 4 of the 9 apples you are only missing 5, however if you have 4 of the ten apples you are missing 6 therefore making 4/9 bigger than 4/10.
You add the amount of pages that she has read in all which is 42+32=72. Then you subtract the sum by the amount fo pages in the book: 232-72 which equals 160