Raeann bought some Geography books at $15 each. She also bought an equal number of Japanese books at a different price. The average price of one Geography and one Japanese book was $11. Raeann paid $16 less for the Japanese books than the Geography books.
- What was the cost of one Japanese book?
- How many Geography books did Raeann buy?
|
Geography |
Japanese |
Less |
Number |
1 u |
1 u |
|
Value |
$15 |
$7 |
|
Total value |
15 u |
7 u |
$16 |
(a)
Price of one Japanese book
= 2 x 11 - 15
= 22 - 15
= $7
Amount that Raeann paid less for Japanese books than Geography books
= 15 u - 7 u
= 8 u
8 u = 16
1 u = 16 ÷ 8 = 2
Number of Geography books that Raeann bought
= 1 u
= 2
Answer(s): (a) $7; (b) 2