Cindy bought some Maths books at $16 each. She also bought an equal number of Literature books at a different price. The average price of one Maths and one Literature book was $12. Cindy paid $80 less for the Literature books than the Maths books.
- What was the cost of one Literature book?
- How many Maths books did Cindy buy?
|
Maths |
Literature |
Less |
Number |
1 u |
1 u |
|
Value |
$16 |
$8 |
|
Total value |
16 u |
8 u |
$80 |
(a)
Price of one Literature book
= 2 x 12 - 16
= 24 - 16
= $8
Amount that Cindy paid less for Literature books than Maths books
= 16 u - 8 u
= 8 u
8 u = 80
1 u = 80 ÷ 8 = 10
Number of Maths books that Cindy bought
= 1 u
= 10
Answer(s): (a) $8; (b) 10