AlgebraMediumProduct of two prices from two purchases
Algebra practice question
At a fair, 3 rides and 2 games cost $21, and a ride costs $2 more than a game. What is the product of the ride price and the game price, in dollars squared?
Answer: 15
Let a game cost g; a ride costs g + 2. Then 3(g + 2) + 2g = 21, so 5g + 6 = 21, g = 3, and a ride is $5. Product: 15.
Common wrong answers
- If you answered 3
- 3 is the game price.
- If you answered 5
- 5 is the ride price.
- If you answered 8
- 8 is the sum of the prices.
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