1100 boys and 700 girls are examined in a test; 42% of the boys and 30% of the girls pass. The percentage of the total who failed is ?
Choose the correct choice from the following answers:
A) 63.3%
B) 52.4%
C) 81.2%
D) 75.4%
E) 69.1%
Total number of students = 1100+700= 
<gadget id="calculator">1100+700</gadget>
<output>1_800</output>
1800   Number of students passed= (42% of 1100+30% of 700) = 462+210= 
<gadget id="calculator">462+210</gadget>
<output>672</output>
672   number of failures= 1128*100/1800 = 190/3%= 63.3%   63.3%nswer is 63.3%
<result>A</result>
1100 boys and 700 girls are examined in a test; 42% of the boys and 30% of the girls pass. The percentage of the total who failed is ?