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प्रश्न
A shopkeeper buys an article for Rs 800 and spends Rs 100 on its transportation, etc. He marks the article at a certain price and then sells it for Rs 1,287 including 10% sales tax. Find his profit as per cent.
संख्यात्मक
बेरीज
उत्तर
C.P. of an article = Rs 800
Expenditure = Rs 100
Total C.P. = Rs 800 + Rs 100 = Rs 900
Let sale price = Rs y
Sale price inclusive of sales tax = Rs 1,287
Rate of sales tax = 10%
Then y + 10% of y = Rs 1,287
`=> y + y/10 = Rs 1287`
`=> (11y)/10 = Rs 1287`
`=> y = Rs (1287 xx 10)/11 = Rs 1170`
His profit = Rs 1170 - Rs 900 = Rs 270
His profit% = `270/900 xx 100% = 30%`
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