Based on the information given their ending cash balance is $12,000.
Using this formula
Ending cash balance=Beginning Cash Balance- Cash Payments+ Loan balance-Minimum cash balance
Let plug in the formula
Ending cash balance=+$50,000-$15,000+$7,000-$30,000
Ending cash balance=$12,000
Inconclusion their ending cash balance is $12,000.
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