Ravish bought 100 articles $4000. He sold 20 of them at a gain of 5%. at what gain percent must he sell the remaining articles so as to gain 20% on the whole

Answers (1)

Cost price of  100 articles = $4000. => $ 40 per article 

He sold 20 of them at a gain of 5%. So the selling price  =  40x105/100 = $ 42 per article 

Selling price of 20 article = $ 42 x 20 = $ 840

For 20 % gain on whole the total selling price = $ 4000 x120/100 = $ 4800

Total Selling price of remianing 80 articles = $ 4800 - $ 840 = $ 3960

  Selling price of ramaining articles =  $ 3960/80 = $ 49.5 per article

Gain % = (49.5-40)x100/40 = 23.75 %

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