Bangladesh Bank Math Solution (2014): Question: Two types of rice costing Tk. 5 and Tk. 6 per kg respectively are mixed together and the mixture is sold for Tk. 7 to make a 20% profit. Find the ratio of the mixture. Solution: Let, cost of x kg is 5 Tk and y kg is 6 Tk, So, cost of rice is 5x+6y and selling price is 7(x+y) as mixture (x+y) kg is sold at 7 Tk. And, profit is 20% We know, Profit (%) = Selling price - Cost price/Cost price According to the question, 20%=(7x+7y)-(5x+6y)/(5x+6y) => 1/5 = 7x+7y-5x-6y/5x+6y) => (5x+6y)/5=2x+y => 5x+6y=10x+5y => 5x=y => x/y=1/5 So, x:y=1:5 (Ans) To learn more about basic & shortcut formula of profit & loss, please watch following video.
Posted on: Sun, 26 Oct 2014 02:40:38 +0000
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