1200 boys and 800 girls are examined in a test; 4% of the boys and 30% of the girls pass. The percentage of the total who failed is ?  Choose the correct option:
A) A)63.3%
B) B)52.4%
C) C)62.8%
D) D)75.4%
E) E)69.1%
Total number of students = 1200+800= 
<gadget id="calculator">1200+800</gadget>
<output>2_000</output>
2000   Number of students passed= (42% of 1200+30% of 800) = 504+240= 
<gadget id="calculator">504+240</gadget>
<output>744</output>
744   number of failures= 1256*100/2000= 
<gadget id="calculator">1256*100/2000</gadget>
<output>314/5 = around 62.8</output>
62.8%   Answer is 62.8%
<result>C</result>
1200 boys and 800 girls are examined in a test; 4% of the boys and 30% of the girls pass. The percentage of the total who failed is ?