Word Problems on Addition and Subtraction of Integers
At 6 p.m., th...
Question
At 6 p.m., the temperature is 6°F. At 2 a.m., the temperature has dropped by 15 degrees. What is the temperature at 2 a.m.?
A
6°F - 15°F = -9°F
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B
15°F+ 6°F = 21°F
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C
-15°F - 6°F = -21°F
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D
-6°F + 15°F = 9°F
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Solution
The correct option is A 6°F - 15°F = -9°F At 6 p.m, the temperature is 6°F.
At 2 a.m, the temperature has dropped by 15 degrees.
So, the temperature at 2 a.m is 6°F – 15°F = -9°F.