a milk man mixed 10% water to pure milk being not content with it,he again mix 10% more water then what is the profit percentage of milk if he sell at the cost price
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let cp be x
x of 10% + 10% = profit
X × 20/100
=X/5 is the profit
profit %= profit/cp × 100%
=x/5 × x × 100%
=2x/5 × 100 %
x= 2/5 × 100%
x = 40 %
profit % = 40%
x of 10% + 10% = profit
X × 20/100
=X/5 is the profit
profit %= profit/cp × 100%
=x/5 × x × 100%
=2x/5 × 100 %
x= 2/5 × 100%
x = 40 %
profit % = 40%
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