The temperature at noon at a certain place was 12 degrees above zero. If it decreases at the rate of 2 degrees per hour until midnight. At what time will it be 10 degrees below zero........... please answer it....[Maths- Class 7(CBSE)]
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Answer:Noon = 12pm
(10+12)÷2
22÷2=11
Therefore after 11 hours from noon it's going to be -10°C
12+11=23
So it means that at 11:00pm it will be-10°C
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