Question

The temperature of a place at 6 p.m. is 12°C above zero. If it decreases at the rate of 2°C
per hour till 6 a.m., the next day, at what time would the temperature be 2°C below zero?
What will be the temperature at 6 a.m.?
Suppose the sunset occurs at 7:15 p.m. on July 15 in Delhi and the setting time of the​

Answer 1

Step-by-step explanation:

at 6pm=12°C

if temperature decrease at rate of 2°C per hour

temperature will reach 0°C at

12/2

6 hours after 6 pm

I.e at 12 in midnight

so temperature will be 0°C at 12 midnight

and it will be -2°C at 1 am

at 6am temperature will be = -2 + ( -2 ×5 ) { 6am - 1am = 5 , so we multiply-2 by 5 }

= -2 + (-10)

= -2-10

= -12°C