Answer:
-11°c
Explanation:
6am temperature= 0°
6 am temperature is 0°
12pm temperature= 12° + 0° = 12°
Noon temperature is said to be 12° higher than the temperature by 6 am so we add the temperature at 6 am and the temperature at noon ( 12pm)
Midnight temperature= 12° - 11°= 1°
By midnight, the temperature has fallen below the temperature at noon by 11° so we subtract the temperature at 12pm (noon) which was 12° by 11°
So we want to find out how many degree Celsius has the temperature fallen between 6 am and midnight,
Recall that by 12pm (noon) the temperature increased, not decreased, so we ignore the temperature at 12pm
By midnight, it has fallen by 11° which is negative 11° (-11°)
Therefore, between 6 am and midnight, the temperature fall was - 11°c