Question

The temperature at noon at a certain place is 12 degrees above zero. If it decreases at the rate of 2 degrees per
hour until midnight, at what time would the temperature be 8°C below zero? What would be the temperature at
mid-night?​

Answer 1

Answer:

at 10 PM the temperature will be 8° below 0.

at midnight the temperature will be 12° below zero

Answer 2

Temperature at noon=12°c

Rate of decreasing=2°c per hour until midnight

time would the temperature be 8°c below zero

so,time will take for decreasing the temperature from 12°c to -8°c = Time = 12°c +8°c=20°c

at what time the the temperature would be 8°c below 0= 20°c÷2°c=10 hours

So, time= 12hour + 10hour=22hour

=22 hours=10 o clock PM

The temperature at midnight>

midnight means--12:00AM

So,time gap between 12:00Am to 12:00Pm is 12 hours.

Temperature at midnight= 12 hours + 12 hours=24 hours

=24 hours ÷ 2= 12 °c below zero

Hence the temperature at midnight is 12°c below zero

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