Based on the percentage that SBA guaranteed out of Nancy's loan, the bank stands to lose $11,250.
The bank stands to lose the amount that wasn't guaranteed by the SBA in the event that Nancy Appleton's business fails.
This amount can be found as:
= Loan amount x ( 1 - percentage guaranteed)
Solving gives:
= 45,000 x ( 1 - 75%)
= $11,250
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