from 4pm to 8pm the temperature dropped by 12 degrees if the

from 4pm to 8pm the temperature dropped by 12 degrees. if the temperature at 8 pm was -3, what was the temperature at 4pm in degrees?

Solution

Let the temperature at 4PM be \'x\'.

We know that temperature dropped 12 degrees between 4PM and 8PM so temperature at 8PM is (x-12) degress

Also we know, temperature at 8PM is - 3 degress

So, x - 12 = - 3 which gives x = 9 degress.