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Maths homework

 

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發問:

The selling price of a pair of shoes is $500, it is 20% less than the marked price.What is the marked price of this pair of shoes? *Please show the steps and the explanation!!! Thx!!!!!

最佳解答:

let $x be the marked price $x(1-20%)=$500 0.8x=500 x=$625 2007-11-02 19:35:50 補充： 問題係講一對鞋的售價係$500,比起標價少２０％,問標價是幾多,好明顯,標價乘1-20%就等於500,所以將500除80%就計到

其他解答:

Let $x be the marked price of this pair of shoes x(1-20%)=500 80%x=500 80/100x=500 x=500*100/80 x=625 ∴The marked price of this pair of shoes is $625. explanation:題目話個selling price係20% less than the marked price,,意思即係marked price>selling price,,所以設marked price為x,,再將佢(1-20%),,就可以搵出selling price|||||Let the marked price be y. (1-20%)y = 500 80% y = 500 80/100 y = 500 8/10 y = 500 4 /5 y = 500 4y = 500 /5 y = 100 x 4 y = 400 Therefore, the marked price is $400. 2007-11-02 23:43:19 補充： sor, that's not the answer of mine.........my cousin is playing my computer....==|||||設marked price of this pair of shoes is X 。 x(1-20%)=500 x =500÷1.2 x =41.62 the marked price of this pair of shoes is 41.62 。5FAD1C75A5AA61DA
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