Emma bought some Japanese books at $16 each. She also bought an equal number of Biology books at a different price. The average price of one Japanese and one Biology book was $12. Emma paid $88 more for the Japanese books than the Biology books.
- What was the cost of one Biology book?
- How many Japanese books did Emma buy?
|
Japanese |
Biology |
More |
Number |
1 u |
1 u |
|
Value |
$16 |
$8 |
|
Total value |
16 u |
8 u |
$88 |
(a)
Price of one Biology book
= 2 x 12 - 16
= 24 - 16
= $8
Amount that Emma paid more for Japanese books than Biology books
= 16 u - 8 u
= 8 u
8 u = 88
1 u = 88 ÷ 8 = 11
Number of Japanese books that Emma bought
= 1 u
= 11
Answer(s): (a) $8; (b) 11