If $5,000 is invested in an account at a simple annual rate of r percent, the interest is $250. When $18,000 is invested at the same interest rate, what is the interest from the investment? Choose the correct choice from the following
A) $700 B) $750 C) $800 D) $850 E) $900
-&gt; 250/5,000=5% and 18,000*5%=900.   Thus, $900 is the answer.
<result>E</result>
If $5,000 is invested in an account at a simple annual rate of r percent, the interest is $250. When $18,000 is invested at the same interest rate, what is the interest from the investment?