Explain to me step by step the following questions:
during christmas a bookstore sold 72 books. if the ratio of books to bookmarks sold was 9: 2, how many book marks did the store sell.

Step-by-step explanation: ok so they sold 9 book marks for every 2 books right?

so you would put 72 over nine like a fraction, then you would put 2 over X like another fraction.

Then cross multiply. 72*x=72x

9*2=18

72 divided by 18 = 40

I hope this helps

the answer is y = 11.54

hope this : )