Abhinav sold an article at a loss of 15%.if the selling price has been increased by Rs100, there would have been a gain of 10%.what was the cost price of the article?

Rs 300

Rs 400

Rs 500

none of the above

Let C.P be Rs x. then (110% of x)-(85 % of x) =100 or 25% of x=100 x/4 = 100 or x=400 so, C.P = Rs 400

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