Question

ling invested some money at 5% intrest. ling also invested $196 more than 3 times that amount at 11%. how much is 8nvested at each raye if ling recevies $1005.76 in intrest after one year?

Answer 1

we get that

$\begin{gathered} 1.05x+(3x+196)\cdot1.11=1005.75 \\ 1.05x+3.33x+217.56=1005.75 \\ 4.38x=788.19\rightarrow x=179.95 \end{gathered}$

so ling invested $179.95 at 5% rate and $735.85 at 11% rate