標題:
★★最佳者雙倍有30分 ：Solve the Problem (F,1 Maths)
發問:
The question： (A.) What was the profit percent or loss percent? (B.) If Mr. cheung had forecasted that the demand of the market would decrease and he had bought 150 kg instead of 250 kg of New Zealand lamb chops, what would the profit percent or loss percent have been then? 更新: The data： Mr. Cheung has a business of selling lamb chops from New Zealand and Australia. He bought 150 kg of New Zealand lamb chops and 83 kg of Australian lamb chops which cost $39/kg and $50/kg respectively. 更新 2: Later, the cost of New Zealand lamb chops rose to $40/kg and he bought 250 kg more. He sold the New Zealand and Australian lamb chops at $55/kg and $60/kg respectively. On the expiry date of those lamb chops, he sold only 300 kg of New Zealand lamb chops ang 80 kg of Australianlamb chops. 更新 3: All the remaining lamb chops had to be destroyed.
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最佳解答:
(A) the profit percent or loss percent = Total sales - total cost/total cost *100% = [(300*55 + 80*60) - (150*39 + 83*50 + 250*40) / (150*39 + 83*50 + 250*40)] * 100% = 6.5% Therefore, there is 6.5% profit. (B) the profit percent or loss percent = Total sales - total cost/total cost *100% = [(300*55 + 80*60) - (150*39 + 83*50 + 150*40) / (150*39 + 83*50 + 150*40)] * 100% = 33.125% Therefore, there is 33.125% profit.
其他解答:
(A.)New Zealand lamb chops total costs:150x39+250x40=5950+10000=$15850 Australian lamb chops total costs:83x50=$4150 New Zealand lamb chops total income =400x55=$22000 Australian lamb chops total income =80x60=$4800 (Total income-total cost)/total cost =(26800-20000)/20000x100%=34% The profit percent is 34% (B.)New Zealand lamb chops total costs:150x39+150x40=5950+6000=11950 Australian lamb chops total costs:83x50=$4150 New Zealand lamb chops total income =300x55=16500 Australian lamb chops total income =80x60=$4800 (Total income-total cost)/total cost =(21300-16100)/16100x100%=52/161=32.29% 2007-02-26 13:18:26 補充： (B.)The profit percent is 32.29%|||||(A) Total Cost = 150 x $39 + 250 x $40 + 83 x $50 = $19,170 Total Revenue = 300 x $55 + 80 x $60 = $21,300 Profit / Loss = Revenue - Cost = $21,300 - $19,170 = $2,130 Profit Percent = Profit / Cost x 100% = 2130/19170 x 100% = 11.11% (B) Total Cost = 150 x $39 + 150 x $40 + 83 x $50 = $15,170 Total Revenue = 300 x $55 + 80 x $60 = $21,300 Profit / Loss = $21,300 - $15,170 = $6,130 Profit Percent = 6130/15170 x 100% = 40.41%
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