the temperature at moon is 10 degree Celsius above zero. It descends at the rate of 2 degree Celsius per hour until midnight, what time would the temperature below 8 degree Celsius? what be the temperature at midnight?
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Change in temperature = 10 - ( -8 ) = 18°C. Rate of decrease = 2° per hour. Time = 18 / 2 = 9 hours. So, the time at which temperature goes 8°C below 0 is 9:00 PM.
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