Mary bought some Malay books at $14 each. She also bought an equal number of History books at a different price. The average price of one Malay and one History book was $11. Mary paid $48 more for the Malay books than the History books.
- What was the cost of one History book?
- How many Malay books did Mary buy?
|
Malay |
History |
More |
Number |
1 u |
1 u |
|
Value |
$14 |
$8 |
|
Total value |
14 u |
8 u |
$48 |
(a)
Price of one History book
= 2 x 11 - 14
= 22 - 14
= $8
Amount that Mary paid more for Malay books than History books
= 14 u - 8 u
= 6 u
6 u = 48
1 u = 48 ÷ 6 = 8
Number of Malay books that Mary bought
= 1 u
= 8
Answer(s): (a) $8; (b) 8