Vanessa bought some Literature books at $11 each. She also bought an equal number of Chinese books at a different price. The average price of one Literature and one Chinese book was $9. Vanessa paid $16 less for the Chinese books than the Literature books.
- What was the cost of one Chinese book?
- How many Literature books did Vanessa buy?
|
Literature |
Chinese |
Less |
Number |
1 u |
1 u |
|
Value |
$11 |
$7 |
|
Total value |
11 u |
7 u |
$16 |
(a)
Price of one Chinese book
= 2 x 9 - 11
= 18 - 11
= $7
Amount that Vanessa paid less for Chinese books than Literature books
= 11 u - 7 u
= 4 u
4 u = 16
1 u = 16 ÷ 4 = 4
Number of Literature books that Vanessa bought
= 1 u
= 4
Answer(s): (a) $7; (b) 4