At a summer camp with 1,800 participants, 1/2 of the campers are aged 8 to 12. Next year, the number of campers aged 8 to 12 will increase by 1/3. After this change, what percentage of the total 1,800 campers will the 8- to 12-year-olds represent?	Pick one:  A) 68%  B) 66%  C) 66 2/3%  D) 60%  E) 70%
Total - 1,800 participants   campers are aged 8 to 12 = (1/2)*1800= 
<gadget id="calculator">(1/2)*1800</gadget>
<output>900</output>
900   Next year, campers are aged 8 to 12= (4/3)*900= 
<gadget id="calculator">(4/3)*900</gadget>
<output>1_200</output>
1200   Percentage= (1200/1800)*100 = 66 2/3%   Answer: Option 66 2/3%
<result>C</result>
At a summer camp with 1,800 participants, 1/2 of the campers are aged 8 to 12. Next year, the number of campers aged 8 to 12 will increase by 1/3. After this change, what percentage of the total 1,800 campers will the 8- to 12-year-olds represent?