AlgebraEasyRate of an oven heating up
Algebra practice question
An oven's temperature rises at a steady rate after it is switched on. Two minutes after switching on, the temperature is 60°C; four minutes after, it is 90°C. By how many degrees Celsius does the temperature rise each minute?
Answer: 15
The rise is 30°C over 2 minutes: 15°C per minute.
Common wrong answers
- If you answered 10
- 10 divides the rise over the wrong number of minutes.
- If you answered 30
- 30 is the rise over two minutes.
- If you answered 22.5
- 22.5 divides 90 by 4, ignoring the starting temperature.
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