Zara bought some French books at $15 each. She also bought an equal number of Literature books at a different price. The average price of one French and one Literature book was $12. Zara paid $36 less for the Literature books than the French books.
- What was the cost of one Literature book?
- How many French books did Zara buy?
|
French |
Literature |
Less |
Number |
1 u |
1 u |
|
Value |
$15 |
$9 |
|
Total value |
15 u |
9 u |
$36 |
(a)
Price of one Literature book
= 2 x 12 - 15
= 24 - 15
= $9
Amount that Zara paid less for Literature books than French books
= 15 u - 9 u
= 6 u
6 u = 36
1 u = 36 ÷ 6 = 6
Number of French books that Zara bought
= 1 u
= 6
Answer(s): (a) $9; (b) 6