$8250 was loaned at 6% per year.
Step-by-step explanation
Total amount of loan is $19,000 
Suppose, the amount of loan at 6% per year is 
 
 
So, the amount of loan at 14% per year will be : 
 dollar.
 dollar.
Amount of interest in one year at 6% 
 dollar and amount of interest in one year at 14%
 dollar and amount of interest in one year at 14% 
 dollar.
 dollar. 
 As the total interest received in one year is $2000, so.....

So, $8250 was loaned at 6% per year.