Diana bought some Malay books at $14 each. She also bought an equal number of Literature books at a different price. The average price of one Malay and one Literature book was $10. Diana paid $80 less for the Literature books than the Malay books.
- What was the cost of one Literature book?
- How many Malay books did Diana buy?
|
Malay |
Literature |
Less |
Number |
1 u |
1 u |
|
Value |
$14 |
$6 |
|
Total value |
14 u |
6 u |
$80 |
(a)
Price of one Literature book
= 2 x 10 - 14
= 20 - 14
= $6
Amount that Diana paid less for Literature books than Malay books
= 14 u - 6 u
= 8 u
8 u = 80
1 u = 80 ÷ 8 = 10
Number of Malay books that Diana bought
= 1 u
= 10
Answer(s): (a) $6; (b) 10