Drill Problem $10-13($Algo$)[$LU $10-3(1)]$

Given

Principal $$14,000,$ Interest Rate $7\%,$ Time $240$ days $($use ordinary interest$)$

Partial payments: On $100$ th day, $$5,400$; On $180$ th day, $$3,200$

a$.$ Use the U$.$S$.$ Rule to solve for total interest cost.

Note: Use $360$ days a year. Do not round intermediate calculations. Round your answer to the nearest cent.

Answer is complete but not entirely correct.

b$.$ Use the U$.$S$.$ Rule to solve for balances.

Note: Use $360$ days a year. Do not round intermediate calculations. Round your answers to the nearest cent.

Answer is complete but not entirely correct.

$\backslash$table$[[,$On $100$th day,On $180$th day$],[$Balance after the payment,$$,8,600\mathrm{.}00,$$$5,400\mathrm{.}00x$