Word Problems on Addition and Subtraction of Integers
At 6 p.m., th...
Question
At 6 p.m., the temperature is 6 °F. By 2 a.m., the temperature has dropped by 15 degrees. What is the temperature at 2 a.m.?
A
–9°F
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B
–15°F
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C
9°F
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D
15°F
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Solution
The correct option is A–9°F At 6 p.m., the temperature is 6 °F.
By 2 a.m., the temperature has dropped by 15 degrees.
So, the temperature at 2 a.m. =6°F–15°F =–9°F