Question 1144676
.
<pre>

The condition immediately leads to a proportion


    {{{I[primary]/0.3}}} = {{{50/200}}}      (inverse proportion)


From the proportion,  find  {{{I[primary]}}} = {{{0.3*(50/200)}}} = {{{0.3*(1/4)}}} = {{{3/4}}} A.    <U>ANSWER</U>
</pre>