On a summer camp, 20% of the campers paid $120 each, 35% paid $80 each and the rest paid $65 each. What percentage of the total amount paid came from the campers who paid $80?
Choose the correct choice.
A) 18% B) 21% C) 26% D) 33.3% E) 35.89%
let the total no of campers be 100   total amount = (20*120)+(35*80)+(40*65) = 2400+2800+2600= 
<gadget id="calculator">2400+2800+2600</gadget>
<output>7_800</output>
$7800   required percentage= (28/78)*100 =33.89%   35.89%
<result>E</result>
On a summer camp, 20% of the campers paid $120 each, 35% paid $80 each and the rest paid $65 each. What percentage of the total amount paid came from the campers who paid $80?