Solve. -Charlotte Invested $6000 in Money Market Funds. Part Was Invested

Solve.
-Charlotte invested $6000 in money market funds. Part was invested at 15% interest, the rest at 11% interest. At the end of each year the fund company pays interest. After one year she earned $764 in simple interest. How
Much was invested at each interest rate?

A) $2400 at 11%;
B) $2600 at 11%;
C) $2600 at 15%;
D) $2400 at 15%; $3600 at 15% $3400 at 15% $3400 at 11% $3600 at 11%