Answer:
The answer is 72.9 dollars.
Step-by-step explanation:
The reserve ratio of 10% means that bank must keep 10% percent of amount deposited in bank to meet emergency payments and can lend the remaining 90% to other banks. So the second bank can lend 81 dollars that is 90% of 81 dollars. As per this rule second bank has 72.9 dollars (90% of 81) to lend.