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The temperature at 12noon was 10 …

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The temperature at 12noon was 10 degrees Celsius above zero. If it decreases at the rate of 2degrees Celsius per hour until midnight,at what time would the temperature be 8degrees Celsius below zero? What would be the temperature at midnight?
  • 1 answers

Yogita Ingle 5 years, 9 months ago

Difference in temperatures = 10 – ( -8) = 10 + 8 = 18
Time taken for reduction of 8°C = 8÷2 = 4 hours
At 4 PM the temperature would be 8°C below zero.
From 12 noon to midnight, 12 hours elapse
Hence, reduction in temperature = 12 x ( -2) = - 24
Hence, temperature at midnight = 10 - 24 = - 14°C

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