Joelle bought some Geography books at $10 each. She also bought an equal number of Physics books at a different price. The average price of one Geography and one Physics book was $8. Joelle paid $44 less for the Physics books than the Geography books.
- What was the cost of one Physics book?
- How many Geography books did Joelle buy?
|
Geography |
Physics |
Less |
Number |
1 u |
1 u |
|
Value |
$10 |
$6 |
|
Total value |
10 u |
6 u |
$44 |
(a)
Price of one Physics book
= 2 x 8 - 10
= 16 - 10
= $6
Amount that Joelle paid less for Physics books than Geography books
= 10 u - 6 u
= 4 u
4 u = 44
1 u = 44 ÷ 4 = 11
Number of Geography books that Joelle bought
= 1 u
= 11
Answer(s): (a) $6; (b) 11