AlgebraEasy–MediumNumber of passengers from a crossing's takings
Algebra practice question
A ferry charges $18 for each car and $6 for each passenger. On one crossing it carried 20 cars and some passengers, and took $684 in total. How many passengers did it carry?
Answer: 54
18(20) = 360 for the cars. Then 6p = 684 − 360 = 324 → p = 54.
Common wrong answers
- If you answered 38
- 38 is 684 ÷ 18, using the wrong price.
- If you answered 114
- 114 is 684 ÷ 6, ignoring the cars.
- If you answered 324
- 324 is the passengers' takings in dollars, not the count.
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