Answer:
The current per month mortgages are $1289.54 less than the earlier per month mortgages.
Step-by-step explanation:
The EMI formula is = 
Here p = 125000
For case 1:
r = 18.75/12/100=0.015625
n = 
So, putting values in formula we get :

= $1960.51
For case 2:
r = 5/12/100=0.004166
n = 
So, putting values in formula we get :

= $670.97
Now we will find the difference between both EMI's
dollars.
Therefore, the current per month mortgages are $1289.54 less than the earlier per month mortgages.