At a contest with 2,500 participants, 1/2 of the people are aged 10 to 12. Next year, the number of people aged 10 to 12 will increase by 1/5. After this change, what percentage of the total 2,500 people will the 10- to 12-year-olds represent?
Choose the correct option:	A) 55%	B) 60%	C) 50%	D) 45%	E) 66%
I just wanted to mention a couple of things here:   * this is a pure ratio question; the number 2,500 is completely irrelevant, and you can ignore it if you like. When we increase something by 1/5, we are multiplying it by 1 + 1/5 = 6/5, so the answer here must be (1/2)*(6/5) = 3/5 = 60 %.   Answer : 60%
<result>B</result>
At a contest with 2,500 participants, 1/2 of the people are aged 10 to 12. Next year, the number of people aged 10 to 12 will increase by 1/5. After this change, what percentage of the total 2,500 people will the 10- to 12-year-olds represent?