One day the temperature was 15 degrees at 7am. it rose by 28 degrees by noon, but fell by 55 degrees by midnight when a cold front moved in. what was the temperature at midnight?

- 12 degrees.

Step-by-step explanation:

Given:

Temperature  was at 7 am = 15 degrees

Temperature rose at noon = 28 degrees

Temperature fell at midnight = 55 degrees

Solution:

Temperature  was at 7 am = 15 degrees

Temperature  was at noon = 15 + 28

                                             = 43 degrees

Temperature  was at midnight =  43 - 55                   

                                                   = - 12 degrees

Thus, temperature  was at midnight  = - 12 degrees.

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step-by-step explanation:

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step-by-step explanation: