Example 13. If the cost price of 10 articles equals the selling price of 9 articles
find the gain or loss percent.
san
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Step-by-step explaination;
let the cost price of one article be x
then the cost price of 10 articles is 10x =selling price of 9 articles
cost price of 9 articles =9x
profit=SP-CP
=10x-9x=x
profit %=profit/cp multiplied by 100
x/9xX100
=100/9
=11 1/9%
THEREFORE THE PROFIT % IS 11 1/9
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