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A trader bought a number of article for rupees 900 ,five articles were found damage. He sold each of the remaining articles at rupees 2 more than the what is paid for it. he got a profit for ₹80 on the whole transaction. find the number of article he brought.what values reflected by the trader by selling an article at rupee 2 to more than actual price?
Asked by anikettudu | 04 Feb, 2018, 09:23: PM
answered-by-expert Expert Answer
begin mathsize 16px style Let space the space number space of space articles space equals straight x Let space the space cost space of space one space article equals Rs. space straight a rightwards double arrow Cost space of space straight x space articles equals straight x cross times straight a equals 900 rightwards double arrow straight a equals 900 over straight x According space to space given space information comma left parenthesis straight x minus 5 right parenthesis cross times left parenthesis straight a plus 2 right parenthesis equals 900 plus 80 rightwards double arrow xa minus 5 straight a plus 2 straight x minus 10 equals 980 rightwards double arrow 900 minus 5 cross times 900 over straight x plus 2 straight x equals 990 rightwards double arrow 2 straight x minus 4500 over straight x equals 90 rightwards double arrow straight x minus 2250 over straight x equals 45 rightwards double arrow straight x squared minus 2250 equals 45 straight x rightwards double arrow straight x squared minus 45 straight x minus 2250 equals 0 SOlve space the space equation space to space get space the space value space of space straight x. end style
Answered by Rashmi Khot | 05 Feb, 2018, 10:18: AM

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