the temperature at 12 noon was 10 degree Celsius about zero if the degrees at the rate of 2 degree Celsius per hour until midnight at what time would be the temperature 8 degree Celsius below zero what would be the temperature at midnight
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At 12 noon the temperature = 10 ℃
........
The temperature decreasing at 2 ℃ per hour
............
8 ℃ below 0 = ( ( - 8 ℃ )
.........
total falls in temperature from 1p ℃ tob0 ℃ and from 0 ℃ to - 8 ℃
.........
Temperatue falls 2 ℃ in every hour
......
Therefore to decreased 18 ℃ time taken
= 18 / 2 = 9
...........
time at which the temperature will be - 8 ℃ is 9 PM
..........
The temperature at 12 midnight will be
........
( - 8 ℃ ) + ( -2 ℃ * 3 )
=> ( - 8 ℃ ) + ( - 6 ℃ )
=> ( - 14 ℃ )
........
The temperature decreasing at 2 ℃ per hour
............
8 ℃ below 0 = ( ( - 8 ℃ )
.........
total falls in temperature from 1p ℃ tob0 ℃ and from 0 ℃ to - 8 ℃
.........
Temperatue falls 2 ℃ in every hour
......
Therefore to decreased 18 ℃ time taken
= 18 / 2 = 9
...........
time at which the temperature will be - 8 ℃ is 9 PM
..........
The temperature at 12 midnight will be
........
( - 8 ℃ ) + ( -2 ℃ * 3 )
=> ( - 8 ℃ ) + ( - 6 ℃ )
=> ( - 14 ℃ )
kshankar1:
write 4th line clearly
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