1. Sometimes, in small towns, banks need to borrow smaller amounts from each other to cover certain denominations of bills and coins when they are running low.
   1. The DEF bank borrowed $10 500 for one day at a rate of j365 = 3.75% , but the next day they needed to borrow another $3750, but the rate increased to j365 = 4% . What does DEF Bank owe if they repay all of their debts the day after they borrowed $3750 and the rate j365 did not change?
   2. If DEF borrowed $23 750 and repaid $23 760 at the interest rate j365 = 7.5% , how long did it take them to repay the loan?