Peter purchased 30 kg of rice at the rate of $11.50 per kg and 20 kg of rice at the rate of 14.25 per kg. He mixed the two and sold the mixture. Approximately what price per kg should be sell the mixture to make 30% profit? Answers:
A) 17.2
B) 15.3
C) 16.3
D) 19.3
E) 10.12
C   16.30   C.P. of 50 kg rice = (30 * 11.50 + 20 * 14.25)= 
<gadget id="calculator">(30 * 11.50 + 20 * 14.25)</gadget>
<output>630</output>
$630.   S.P. of 50 kg rice= 130% of $630 = 130/100 * 630= 
<gadget id="calculator">130/100 * 630</gadget>
<output>819</output>
$819.   S.P. per kg= 819/50= 
<gadget id="calculator">819/50</gadget>
<output>819/50 = around 16.38</output>
$16.38= 16.30.
<result>C</result>
Peter purchased 30 kg of rice at the rate of $11.50 per kg and 20 kg of rice at the rate of 14.25 per kg. He mixed the two and sold the mixture. Approximately what price per kg should be sell the mixture to make 30% profit?