Answers

2016-04-13T21:18:56+05:30
Initial Temperature = 40° C
Rate of change in temperature = 5°C/hour
Time = 10 hours

So, in 10 hours the temperature would be decreased by 10*5 = 50°C.

So, Final Temperature = 40 - 50  =  - 10°C
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2016-04-13T21:19:55+05:30
Room temperature - 40 C
t is also given that the room temperature lowers at the rate of 5° C, 
After one hour the temperature becomes (40 – 5) = 35° C
After two hours the temperature becomes (35 – 5) = 30° C
Hence after 10 hours the temperature becomes (-10° C)
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