Question

The temperature at 10 a.m. was 12digri c above zero. If it descreases at the rate of 3digri c per hour untill mid night at what time would the temprature be 15digri c below zero? What would be the temperature at mid night?

Answer 1

at 7pm temp will below 0 to 15c
at midnight - 30c

Answer 2

You can simply apply the formula...

time = distance / speed
here, change in temperature will come in the place of distance

=> change in temp. = 12 + 15 = 27°C
and speed = 3°C per hour

=> Time taken = 27/3 = 9 hours
So, The time will be 10am+9 = 7 pm
Now, temperature at 12 am ,i.e, after 5hrs more will be

change in temperature = speed*time
= 3*5 = 15°C
Thus, the required = -15°C + 15 = -30°C
temperature





hope it helps...... was it the brainliest??