Shortt & tall, attorneys at law, opened their firm with $30,000 cash from investors

Shortt & tall, attorneys at law, opened their firm with $30,000 cash from investors and a $20,000 loan. during the first year of operations, the firm earned $4,000 of revenue and incurred $1,000 in operating expenses. shortt & tall repaid $12,000 in principal, and paid 10% interest on the balance outstanding at the end of the year. how much money did shortt & tall borrow?