How to solve cnbc$.$com reported mortgage application increased $9\mathrm{.}9$ due to a decrease in the rate on $30$ year fixed rate mortgage Joe wants to purchase a vacation home for $245,000$ with $20\%$ down calculate the monthly payment for $30$ year mortgage at $5\mathrm{.}5$ and calculate total interest use so the table a $5\mathrm{.}5$ is $5\mathrm{.}67789$ Change it to $245$ to $245,000$