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20 September, 03:58

At noon the temperature was 5*C. Over the next 4 hours the temperature dropped another 7 degrees. Then every hour until 9:00 the temperature rose 3 degrees. What was the temperature at 9:00?

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  1. 20 September, 07:53
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    5-7=-2

    -2 + (3 x 5) = 13

    13 is the answer

    also the 5 came from the leftover time. because if it started at 12 and then 4 hours passed it would now be 4 and there are 5 hours left from 4 to 9
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