John bought a 1-year, $20,000 certificate of deposit that paid interest at an annual rate of 10 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity? Choices:	A) $2150	B) $2050	C) $2250	D) $2350	E) $2400
10 percent compounded semiannually --&gt; 5% in 6 moths.   For the first 6 moths interest was 5% of $20,000, so $1000;   For the next 6 moths interest was 5% of $21,000, so $1050   Total interest for 1 year was $1000+$1050=$2050   Answer : $2050  1000+ 1050= 
<gadget id="calculator">  1000+ 1050</gadget>
<output>2_050</output>
$2050   Answer : $2050
<result>B</result>
John bought a 1-year, $20,000 certificate of deposit that paid interest at an annual rate of 10 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity?