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posted by Anon Monday, July 22, 2013 at 4:28pm.
if x is r percent of y and if k is s percent y, then x is what percent of k? 100(r+s)% 100/rs% 100r/s% 100s/r% rs/100%
x/y = 100r k/y = 100s y = x/100r = k/100s so, x/k = 100r/100s = r/s or 100r/s%
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