At sunset

Suppose the temperature at midday was 21 °C. By sunset, it had dropped by 9 °C. What was the temperature at sunset?

Final Answer:

t2 =  12 °C

Step-by-step explanation:

t1=21 °C t2=t19=219=12°C



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You need to know the following knowledge to solve this word math problem:

arithmeticUnits of physical quantitiesGrade of the word problem

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