Step-by-step explanation
Let the first part of the loan be loaned out be x and the other part be 10000-x.
Therefore, for 9% rate per year, we will have the interest for the first part as

At 19% rate, the interest for the second part becomes;

Therefore, we can say that the sum of the above interest will give 1500

Answer: At 9% the bank loan out 4000