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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.

 Feb 20, 2020
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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 \(\boxed{60}\) gifts, and \(\boxed{135}\) cards. There total would be \(\boxed{195}.\)

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 Feb 20, 2020

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