maths question[percentage]

2006-11-15 3:39 am

Mr Chan buys 10 dozen pens at a [rice of $480.Later on he sells the pens at $3.5 each.Find his loss% after he sells all the pens.

回答 (3)

2006-11-15 3:53 am

✔ 最佳答案

cost of a pen
480 / ( 10 * 12 )
= 4

loss for each pen: 4 -3.5 = 0.5

loss percentage: 0.5 / 4 = 12.5%#

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2006-11-15 4:49 am

The percentage loss:
$3.5x10x12-$480
-------------------------
$480 x100%
= -12.5%

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2006-11-15 3:44 am

original price = 10x480 = $4800
new price = 10x3.5 = $35
%loss = (35-4800)/4800x100%
= 99.3%

參考: me

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