Michelle borrows a total of $$5000$ in student loans from two lenders. One charges $3\mathrm{.}7\%$ simple interest and the other charges $6\mathrm{.}4\%$ simple interest. She is not required to pay off the principal or interest for $3yr.$ However, at the end of $3yr,$ she will owe a total of $$717$ for the interest from both loans. How much did she borrow from each lender?

Part: $\frac{0}{2}$

Part $1$ of $2$

Michelle borrowed $$,$ at $3\mathrm{.}7\%.$