Question

The library is ordering 832 new books. The ratio of

fiction to non-fiction is 3 to 5. The average price of the
fiction books ordered by the library is $7. What is the
total amount spent on the new fiction books?

Answer 1

$2184

Explanation:

The total number of "ratio units" in the ratio fiction : non-fiction is 3+5 = 8. The total number of fiction + non-fiction books is 832, so each ratio units must stand for 832/8 = 104 books.

Then the 3 ratio units of fiction books stand for 3×104 = 312 books. The total spent on fiction books is that number times the average price:

312 × $7 = $2184 . . . . total spent on fiction books