Problem
Solution
For this problem we can see that the temperature on Monday is 40ºF and the temperature on Tuesday is -10ºF so then we can conclude that the the reduction in one day is:
40 -(-10) =50ºF
We also know that the temperature on Wednesday is colder than -10ºF but lower than 0ºF
So then the temperature for Wednesday can be any number between -10ºF and 0ºF