Mark has $$100,000$ to invest. His financial consultant advises him to diversify his investment in three types of bonds: short$-$term, intermediate$-$term, and long$-$term. The

short$-$term bonds pay $4\%,$ the intermediate$-$term bonds pay $6\%,$ and the long$-$term bonds pay $7\%$ simple interest per year. Mark wishes to realize a total annual income of

$5\mathrm{.}7\%,$ with equal amounts invested in short$-$ and long$-$term bonds. How much should he invest in each type of bond?