No Plagiarism!CV8tvc9baUCFaZH1681Iposted on PENANA 題目:8964 copyright protection40PENANADreCLdnzsZ 維尼
已知某商品以定價八折賣出將賠本420元;如果以定價的九五折賣出可賺300元,求此商品成本為_______元。8964 copyright protection40PENANAg7fX1l0Z17 維尼
解題過程:8964 copyright protection40PENANAsBv9JsTAG0 維尼
一元一次:8964 copyright protection40PENANAcKW2uibInq 維尼
設定價為x,44Please respect copyright.PENANAQWZgqQTlH8
8964 copyright protection40PENANAt2qKePVyI6 維尼
第一句話 ➙ 0.8x+420=成本8964 copyright protection40PENANAGFP64Qa0bm 維尼
第二句話 ➙ 0.95x-300=成本8964 copyright protection40PENANAQtgaSZIngT 維尼
➙ 0.8x+420=0.95x-30044Please respect copyright.PENANAeozpmbT8Rv
8964 copyright protection40PENANAMckpgGrYaJ 維尼
➙ 720 = 0.15x ➙ 4800 = x44Please respect copyright.PENANAjGeisc0ORU
8964 copyright protection40PENANAaa4qS3tP4m 維尼
➙ 0.8 * 4800 + 420 = 成本44Please respect copyright.PENANAa9c1zTnkxK
8964 copyright protection40PENANAVPso4SvTjk 維尼
➙ 成本 = 426044Please respect copyright.PENANAFxAdjI5qhn
8964 copyright protection40PENANAHniUMSTlOY 維尼
44Please respect copyright.PENANADWOOxuNHTk
8964 copyright protection40PENANAVbcZexJJH2 維尼
二元一次:8964 copyright protection40PENANAIGNgJ21HDD 維尼
設定價為x,成本為y,8964 copyright protection40PENANAu0tDNJBZnT 維尼
第一句話 ➙ 0.8x = y - 4208964 copyright protection40PENANAEhoIiwENA1 維尼
第二句話 ➙ 0.95x = y + 3008964 copyright protection40PENANA9FT49Y4fhv 維尼
➙ 0.8x - y = -420 -------- A44Please respect copyright.PENANAxa2OvDhD4P
8964 copyright protection40PENANAH9zuQaUn9a 維尼
0.95x - y = 300 -------- B 44Please respect copyright.PENANAnIthPuqyUx
8964 copyright protection40PENANAvBLBuvRap7 維尼
➙0.15x = 720 ( B式 - A式 ) ➙ x = 480044Please respect copyright.PENANAUmkTPlfLnc
8964 copyright protection40PENANAQjsQ2rLotX 維尼
0.8 * 4800 - y = -420 ( x=4800帶入A式 ) ➙ y = 42608964 copyright protection40PENANAmxGFlSR4v6 維尼
➙ 定價為4800,成本為426044Please respect copyright.PENANArrroPKfsoM
8964 copyright protection40PENANAjLoMldp1Xa 維尼
44Please respect copyright.PENANAWpjcagtfh2
8964 copyright protection40PENANAiWqextfDOt 維尼
得,此商品成本為4260元8964 copyright protection40PENANAZq147jf2An 維尼
44Please respect copyright.PENANAHGPXlM1n50
8964 copyright protection40PENANA3PewWPnHsn 維尼
44Please respect copyright.PENANAfajsex9eCf
8964 copyright protection40PENANALUx7AZukX4 維尼
44Please respect copyright.PENANAjunzJOvUoo
8964 copyright protection40PENANAmtsokifc25 維尼
18.218.241.211
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