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During last year the number of students in RSM increased by 100%. This year, the number of students increased by 150%. What percent of the number of students now was the number of students two years ago?

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increasing by N% means the new value is 1+N/100 as much as the old value. So, we have

new = old*(1+1)(1+1.5) = 5.00 * old
so, old = new/5 or 20%

20%, found on brain. ly

20%

20

wowza

bloo

right

20%

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