The percentage profit earned by selling an article for Rs. 960 is equal to the percentage loss incurred by selling the same article for Rs. 640. At what price should the article be sold to make 35% profit?

Rs.1080

Rs.980

Rs.1140

Rs.1060

Solution: Let C.P be Rs. X. Then, (960-x)*100/x = (x-640)*100/x => 960 -x = x - 640. => 2x = 1600 => x =800. .'. Required S.P. = 135% of Rs. 800 = Rs.(135*800/100) = Rs. 1080.

where on earth do you get 135?

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