harley is saving money for a school trip. she has made 15 bracelets and 20 bookmarks to sell. she expects to earn $195. if the bracelets cost 3 times as much as the bookmarks, how much does each bracelet and bookmark cost?

Answer: bookmarks cost $3 and bracelets cost $9

explanation:

(Bracelets = b)

(Bookmarks = m)

15b + 20m = 195

Bracelets cost 3 times as much as bookmarks

b = 3m

Substitute b for 3m

15 (3m) + 20m = 195

Multiply 15 and 3

45m + 20m = 195

Add 45 and 20

65m = 195

To get m on its own, divide 65 from both sides.

195 divided by 65 is 3

m = 3

Bookmarks cost $3

Bracelets cost 3 times as much as bookmarks

So $3 * 3 = $9