The temperature on a winter Monday morning is -15.4 degrees according to a digital thermometer. The temperature drops a little more each day. Four days later, it has dropped 20% from the Monday morning reading of -15.4. What is that temperature four days later after the 20% drop, measured to the tenth of a degree?
Explain in writing how you completed the task. What did you do and in what order did you do it?
After you have completed your written explanation, pick a new starting temperature for a new problem. Please choose a negative temperature between -1 and -9. Then choose a percentage drop of between 20% and 40%. After you set up the new problem, solve it yourself and be prepared to explain your problem and answer.
Something to think about...
If we started at +10 degrees and had a 50% drop, would you expect the new temperature to be +5 degrees? If we started at -10 degrees and had a 50% drop, would you expect the new temperature to be -5 or -15? Why?
An answer and explanation for Q2 will be published in another post soon.