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Question
If selling an article for ₹ 820 causes 10% loss on the selling price, then find its cost price.
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Solution
Given that selling price (S.P) = ₹ 820
Loss % = 10%
As per formula S.P = `C.P xx ((100 - "loss"%))/100`
∴ Substituting in formula, we get
820 = `C.P xx ((100 - 10)/100)`
820 = `C.P xx ((90)/100)`
∴ C.P = `(820 xx 100)/90`
= 911.11
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