AlgebraEasyPrice of a pen from a small purchase
Algebra practice question
Two pens and a $6 notebook cost $36 in total. What is the price, in dollars, of one pen?
Answer: 15
2p + 6 = 36 gives 2p = 30, so p = 15.
Common wrong answers
- If you answered 18
- 18 halves 36 without removing the notebook.
- If you answered 21
- 21 adds 6 to 15.
- If you answered 30
- 30 is the cost of both pens.
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