AlgebraEasy–MediumEqual increases from a start to an end value
Algebra practice question
A bus fare was $2.40. It was increased twice, by the same amount each time, and is now $3.10. By how much, in dollars, was the fare increased each time?
Answer: 0.35
2.40 + 2r = 3.10 → 2r = 0.70 → r = 0.35.
Common wrong answers
- If you answered 0.7
- 0.70 is the total increase, not each increase.
- If you answered 1.4
- 1.40 doubles the total instead of halving it.
- If you answered 1.55
- 1.55 comes from 3.10 ÷ 2, halving the new fare instead of the increase.
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