AlgebraEasy–MediumRemaining amount from a linear model
Algebra practice question
A phone battery is at 90% and loses 6 percentage points per hour of video. What percentage will remain after 10 hours of video?
Answer: 30
90 − 6 × 10 = 30.
Common wrong answers
- If you answered 15
- 15 divides 90 by 6, which isn't the question.
- If you answered 60
- 60 is the amount LOST, not what remains.
- If you answered 84
- 84 is after one hour.
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