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 this profit percent.
A
25%
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B
30%
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C
35%
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D
40%
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Solution
The correct option is A 30% Let the M.P=x
then adding sales tax ⇒x+10%ofx=x+x10=1287Rs.
⇒11x10=1287
⇒x=1287011=Rs.1170
C.P of the article=800+transportationcost=800+100=Rs.900