Using the I=PRT formula, you can plug in some things we already know.
We know the principal, which is 43,200, Â we know the interest rate per year, and we finally know how much time he is going to have his money in there. But, he wants 4 months, and 4 months is 1/3 of the whole year, so we are going to use that to plug it in our formula. Now, we have
[tex]I=43200*.14* \frac{1}{3} [/tex]Â
This equals to 2016.
But this is not our final answer. 2016 is just the amount of money he earned in those 4 months, not his whole savings, so we add 2016 to 43200 to get 45216