. यदि 500 का x%=300 का y% तथा 200 का y% का x%=60 हो तो x = ?
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500 * x/100 = 300 * y/100
5x=3y
y=5x/3..........(1)
[200 * y/100] * x/100=60
[2y]*x=6000
(2*5x/3)*x=6000
x²=6000*3/10
x²=1800
x=30 root2
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