In a survey of 900 people making a purchase at a book store, 14% preferred hardcover books and 42% preferred soft cover books. How many more
people preferred soft cover books than hardcover books?

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers