Marcy has 12 bracelets and 15 necklaces. Shelly has 25 necklaces. If the ratio of Marcy’s bracelets to her necklaces is the same as the ratio of Shelly’s bracelets to her necklaces, how many bracelets does Shelly have?

20 bracelets

Step-by-step explanation:

So Marcy has 12 bracelets and 15 necklaces. It is stated in the problem that this ratio (12:15) is the same as the ratio of Shelly's bracelets to necklaces (x:25). To solve this, we set up a proportion like so:

12/15=x/25 and we can use cross multiplication to solve for x. x=20, so the answer is 20 bracelets.

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