document.write( "Question 417549: A retailer buys a batch of 50 items of a product for 10 000 €. He then sets a price so that the
\n" ); document.write( "selling price is 80 % higher than the buying price. When there is 40 % left of the batch, the
\n" ); document.write( "retailer lowers the price and manages to sell off the rest for a reduced selling price of
\n" ); document.write( "171 €/item.
\n" ); document.write( "a) Calculate the discount percentage relative to the initial selling price.
\n" ); document.write( "b) Calculate the profit percentage for the whole batch.
\n" ); document.write( "Give your answers with an accuracy of one decimal.
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\n" ); document.write( "I TRIED IT THIS WAY
\n" ); document.write( "Let's resume what he did.
\n" ); document.write( "he bought 50 items for 10000€ means 1 item for 200€
\n" ); document.write( "when he set the selling price, it was 200*1.80 = 360€ for one item.
\n" ); document.write( "60% out of 50 items were sold by 360€/item...that gives us 360*30items = 10800€.
\n" ); document.write( "40% that is 20 items were sold by 171€*20 = 3420€.
\n" ); document.write( "a)
\n" ); document.write( "the discount percentage relative to the initial selling price: is the discount from 200€/item to 171€/item
\n" ); document.write( "200€-----------100%
\n" ); document.write( "171€-----------x%
\n" ); document.write( "x% = 85.5%
\n" ); document.write( "The discount is 100%-85.5%= 14.5%
\n" ); document.write( "b)
\n" ); document.write( "10800€+3420€ = 14220€ for the whole batch
\n" ); document.write( "that's:
\n" ); document.write( "10000€-------100%
\n" ); document.write( "14220€-------y%
\n" ); document.write( "y% = 142.2%
\n" ); document.write( "the profit percentage for the whole batch is 42.2% ?
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Algebra.Com's Answer #292344 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "you are correct............\r
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\n" ); document.write( "\n" ); document.write( "For the profit percentage, the initial cost is 10,000€,\r
\n" ); document.write( "\n" ); document.write( "that's 200€ each , so an 80% increase would be 360€ each.\r
\n" ); document.write( "\n" ); document.write( "He sells 40%, or 30 items at 360€ = 10,800€
\n" ); document.write( "He sells 60%, or 20 items at 171€ = 3,420€ total = 14,220€\r
\n" ); document.write( "\n" ); document.write( "So the profit percent would be 14,220 - 10,000 = 4220/10,000=0.422\r
\n" ); document.write( "\n" ); document.write( "or 42.2%
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