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

Given

Principal $$8,000,$ Interest Rate $7\%,$ Time $240$ days $($use ordinary interest$)$

Partial payments: On $100$ th day, $$3,400$; On $180$ th day, $$2,300$

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

Note: Use $360$ days a year. Do not round intermediate calculations. Round y

Total interest cost

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

Note: Use $360$ days a year. Do not round intermediate calculations. Round y

$\backslash$table$[[,$On $100$th day,On $180$th day$],[$Balance after the payment,,$]]$