HKD1710 wrote:
In a certain bookstore, 30 percent of the books that have been discounted are called bargain books and are priced below $4. If the bargain books make up 18 percent of the total number of books in the store, what percent of the books in the store are discounted?
A) 13%
B) 48%
C) 54%
D) 60%
E) 88%
We can let the total number of discounted books = d and let the total number of books in the store = n.
We need to determine what percent of the books in the store are discounted or d/n x 100 = ?
Since 30 percent of the books that have been discounted are called bargain books,
bargain books = 0.3dSince bargain books make up 18% of the total books in the store,
bargain books = 0.18nThus, we can equate 0.3d and 0.18n and isolate d/n.
0.3d = 0.18n
30d = 18n
d/n = 18/30 = 3/5
Thus d/n x 100 = 3/5 x 100 = 60 percent.
Answer: D
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83% (01:59) correct 
