During a reading challenge, Neha completed 9 of 15 assigned books, while Kabir completed 10 of 20 books.
(1) Find the percentage of books completed by Neha.
(2) Who completed a greater percentage of the assigned books?
(3) By how many percentage points is their completion percentage different?
(4) Neha says, "Kabir completed more books than I did, so his completion percentage must be higher." Is Neha's statement correct or incorrect?
[ Note: Choose the option rounded to the nearest whole number ]