Emma bought some Japanese books at $12 each. She also bought an equal number of Literature books at a different price. The average price of one Japanese and one Literature book was $10. Emma paid $40 more for the Japanese books than the Literature books.
- What was the cost of one Literature book?
- How many Japanese books did Emma buy?
|
Japanese |
Literature |
More |
Number |
1 u |
1 u |
|
Value |
$12 |
$8 |
|
Total value |
12 u |
8 u |
$40 |
(a)
Price of one Literature book
= 2 x 10 - 12
= 20 - 12
= $8
Amount that Emma paid more for Japanese books than Literature books
= 12 u - 8 u
= 4 u
4 u = 40
1 u = 40 ÷ 4 = 10
Number of Japanese books that Emma bought
= 1 u
= 10
Answer(s): (a) $8; (b) 10