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Let the CP of 11 shirts = x
Therefore CP of 1 shirt = x/11
SP of 10 shirts = x ( Given that CP of 11 shirts is same as SP of 10 shirts)
Therefore SP of 1 shirt = x/10
Profit on 1 Shirt = SP – CP
= x/10 - x/11
= ( 11x-10x )/110
Profit % = Profit / CP X 100
= ( x/110 / x/11 ) x 100
= ( 11/110 )x 100
C.P. (Cost price) of 11 shirts equals S.P. (selling price) of 10 shirts. If it equals x, the cost of one shirt is `x/11` and the selling price of one shirt is `x/10` . Since 1/10 is greater than 1/11, the selling price is greater than the cost price, so there will be profit.
The percentage of profit is the ratio of money made by selling one shirt (selling price - cost price) to the selling price:
% profit = `(x/10-x/11)/(x/10) *100%`
Simplify this fraction by multiplying numerator and denominator by 11*10:
`(11*x -10*x)/(11*x) *100% =1/11 *100% =9.09%`
So profit percentage is 9.09%.
Please refer to the image for calculation steps.
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