Jane invested $\$1000$ in a bank.One part of it at $8\%$ rate of interest and the rest $10\%$ interest.The total amount she recieved on interest was $\$94$. At what rate did she invest at each rate?

Question

$\begin{array}{1 1} a)\;\$ 300\;and \;\$700 \\ b)\;\$ 700\;and \;\$300 \\ c)\;\$ 400\;and \;\$600\\ d)\;\$ 600\;and \;\$400\end{array} $