The temperature of a room at 9 am was 20°C above zero. It increases at the rate of 2°C per hour until 12 noon, then it decreases at the rate of 3°C per hour until midnight. What would be the temperature at midnight?
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OFF THE SAME QUESTION IS HERE ALSO I ANSWERD IT FIRST SO SEE IT FROM THERE
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The temperature at midnight will be 62 degree Celsius
20+2*3+3*12=62
20+2*3+3*12=62
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