Problem:
On a particular January day, the high temperature in Lincoln, Nebraska, was degrees higher than the low temperature, and the average of the high and low temperatures was . In degrees, what was the low temperature in Lincoln that day?
Answer Choices:
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Solution:
The difference between the high and low temperatures was degrees, so the difference between each of these and the average temperature was degrees. The low temperature was degrees less than the average, so it was .
The problems on this page are the property of the MAA's American Mathematics Competitions