The temperature at 12 noon at a certain place was 18° above zero. If it decreases at the rate of 3° per hour at what time it would be 12° below zero? *
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Answer:
At 2pm the temperature will be 12°
Step-by-step explanation:
12 noon = 18°
Decreases per hour = 3°
∴ at 1 pm = 18° - 3°
= 15°
at 2pm = 15° - 3°
= 12°
Therefore the answer is 2pm
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