Gabby bought some Japanese books at $15 each. She also bought an equal number of English books at a different price. The average price of one Japanese and one English book was $12. Gabby paid $36 less for the English books than the Japanese books.
- What was the cost of one English book?
- How many Japanese books did Gabby buy?
|
Japanese |
English |
Less |
Number |
1 u |
1 u |
|
Value |
$15 |
$9 |
|
Total value |
15 u |
9 u |
$36 |
(a)
Price of one English book
= 2 x 12 - 15
= 24 - 15
= $9
Amount that Gabby paid less for English books than Japanese books
= 15 u - 9 u
= 6 u
6 u = 36
1 u = 36 ÷ 6 = 6
Number of Japanese books that Gabby bought
= 1 u
= 6
Answer(s): (a) $9; (b) 6