The high temp today was 62 degrees when night time comes, the temp will drop 40 degrees. by 4 am the temp will drop an additional 40 degrees. what is the temp at 4a,

The temperature at day today = 62 degrees

Since at night the temperature will fall by 40 degrees, the temperature at night = 62 - 40 = 22 degrees

By 4 AM, the temperature will again fall by 40 degrees, so the final temperature at 4 Am = 22 - 40 = - 18 degrees

We can now conclude that there are two successive falls of 40 degrees.

Therefore, the temperature at 4 AM will be - 18 degrees (negative)