A hospital gift shop sells magazines, books and cards in the ratio 4:3:9. Suppose the shop sold 45 books, how many magazines and how many cards did they sell.
+305 We know the ratio from gifts to books to cards is 4:3:9. We know that there are 45 books sold. Thus, 45/3=15. Multiply each term in the constant ratio by 15. So, the ratio is now 60:45:135. Thus, they sold 60 gifts, and 135 cards. There total would be 195.
