Question

The temperature at noon was 10 degree celsius above zero.if it decreases at the rate of 2degree celsius per hour untill midnight,at what time would the temperature be 6degree celsius below zero What would be the temperature at midnight?

Answer 1

Answer:

Step-by-step explanation:

Solution : Temperature at 12 Noon = 10°C above 0°C = 10°C

             It decreases at 2° per hour.

Final temperature = 6°C below 0 = -6°C

Change in temperature = 10 - ( -8 ) = 18°C.

Rate of decrease = 2° per hour.

Time = 16 / 2 = 8 hours.

So, Time at which temperature would be 6°C below zero = 12:00 + 8:00 = 20:00

                 So, the time at which temperature goes 6°C below 0 is 8:00 PM.

Also, The temperature at 12 :00 PM = 10° C, As temperature decreases at 2°C,

Temperature at mid night = 10° C - 2 ( 12 ) = 10 - 24 = -14° C.

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