AlgebraEasyEquation for a total cost of two items
Algebra practice question
A shop sells pencils for 2 dollars each and pens for 3 dollars each. Which equation states that x pencils and y pens cost 24 dollars in total?
- A. 2x + 3y = 24Correct
- B. 3x + 2y = 24
- C. x + y = 24
- D. 2x − 3y = 24
Answer: A. 2x + 3y = 24
Pencils cost 2x dollars and pens cost 3y dollars, and together they cost 24.
Why the other answers are wrong
- B. 3x + 2y = 24
- This swaps the prices.
- C. x + y = 24
- This ignores the prices.
- D. 2x − 3y = 24
- Costs add; they are not subtracted.
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