AlgebraEasy–MediumHardbacks bought with a fixed total
Algebra practice question
A bookshop sells used paperbacks for $3 each and used hardbacks for $8 each. Rosa bought 5 paperbacks and some hardbacks and paid $39 in total. How many hardbacks did she buy?
Answer: 3
15 + 8h = 39 gives 8h = 24, so h = 3.
Common wrong answers
- If you answered 8
- 8 copies the hardback price.
- If you answered 24
- 24 is what the hardbacks cost in dollars.
- If you answered 4.875
- 4.875 divides 39 by 8, ignoring the paperbacks.
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