Gabby bought some Malay books at $15 each. She also bought an equal number of Japanese books at a different price. The average price of one Malay and one Japanese book was $11. Gabby paid $88 more for the Malay books than the Japanese books.
- What was the cost of one Japanese book?
- How many Malay books did Gabby buy?
|
Malay |
Japanese |
More |
Number |
1 u |
1 u |
|
Value |
$15 |
$7 |
|
Total value |
15 u |
7 u |
$88 |
(a)
Price of one Japanese book
= 2 x 11 - 15
= 22 - 15
= $7
Amount that Gabby paid more for Malay books than Japanese books
= 15 u - 7 u
= 8 u
8 u = 88
1 u = 88 ÷ 8 = 11
Number of Malay books that Gabby bought
= 1 u
= 11
Answer(s): (a) $7; (b) 11