Wendy bought some Maths books at $15 each. She also bought an equal number of English books at a different price. The average price of one Maths and one English book was $11. Wendy paid $96 less for the English books than the Maths books.
- What was the cost of one English book?
- How many Maths books did Wendy buy?
|
Maths |
English |
Less |
Number |
1 u |
1 u |
|
Value |
$15 |
$7 |
|
Total value |
15 u |
7 u |
$96 |
(a)
Price of one English book
= 2 x 11 - 15
= 22 - 15
= $7
Amount that Wendy paid less for English books than Maths books
= 15 u - 7 u
= 8 u
8 u = 96
1 u = 96 ÷ 8 = 12
Number of Maths books that Wendy bought
= 1 u
= 12
Answer(s): (a) $7; (b) 12