No Plagiarism!CdFuNycKESJamKFnXiLwposted on PENANA 題目:8964 copyright protection42PENANARfMqwmvyAK 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 protection42PENANAgIoMkNycvt 維尼
解題過程:8964 copyright protection42PENANAQ9rW2cn0Wq 維尼
一元一次:8964 copyright protection42PENANAllZVDOK6Bf 維尼
設定價為x,46Please respect copyright.PENANAqNxgoLhjYx
8964 copyright protection42PENANAgSwLUcZ2F3 維尼
第一句話 ➙ 0.8x+420=成本8964 copyright protection42PENANAp0VADGGgUb 維尼
第二句話 ➙ 0.95x-300=成本8964 copyright protection42PENANAPTtR41smzS 維尼
➙ 0.8x+420=0.95x-30046Please respect copyright.PENANAUbRPWfUyYy
8964 copyright protection42PENANAY4kUnpFhp9 維尼
➙ 720 = 0.15x ➙ 4800 = x46Please respect copyright.PENANAWr0qe3ZA9J
8964 copyright protection42PENANAuDbKAvEbJA 維尼
➙ 0.8 * 4800 + 420 = 成本46Please respect copyright.PENANA3Iji6VHL7E
8964 copyright protection42PENANAJYOiKjsPqN 維尼
➙ 成本 = 426046Please respect copyright.PENANArYdKdHBOcK
8964 copyright protection42PENANASYojzBdxPB 維尼
46Please respect copyright.PENANAdvs8NF2cCV
8964 copyright protection42PENANARlkZ5CduG0 維尼
二元一次:8964 copyright protection42PENANAIwFD8OBS9V 維尼
設定價為x,成本為y,8964 copyright protection42PENANAJc5cKk6TuO 維尼
第一句話 ➙ 0.8x = y - 4208964 copyright protection42PENANA97ExrSlTab 維尼
第二句話 ➙ 0.95x = y + 3008964 copyright protection42PENANAoJUuGvHmlV 維尼
➙ 0.8x - y = -420 -------- A46Please respect copyright.PENANAbnSwwMJQMP
8964 copyright protection42PENANAtPumee52bM 維尼
0.95x - y = 300 -------- B 46Please respect copyright.PENANAxfOZETGogG
8964 copyright protection42PENANAKyt8kifVRH 維尼
➙0.15x = 720 ( B式 - A式 ) ➙ x = 480046Please respect copyright.PENANA4Hk71KbO2a
8964 copyright protection42PENANATVxnFg5CEj 維尼
0.8 * 4800 - y = -420 ( x=4800帶入A式 ) ➙ y = 42608964 copyright protection42PENANAdrbU87XHB6 維尼
➙ 定價為4800,成本為426046Please respect copyright.PENANARuclEOgWNU
8964 copyright protection42PENANAJCgAkjC3ci 維尼
46Please respect copyright.PENANA6a5af04tyz
8964 copyright protection42PENANATNvuP2wfJs 維尼
得,此商品成本為4260元8964 copyright protection42PENANANu5dtCBx1r 維尼
46Please respect copyright.PENANA8NSAzMtwm5
8964 copyright protection42PENANAlLYqQt1T6G 維尼
46Please respect copyright.PENANA9ja8QwCuRT
8964 copyright protection42PENANAUIrU8aLU88 維尼
46Please respect copyright.PENANAXRuVhIYj43
8964 copyright protection42PENANAeeRdyF9Q3E 維尼
18.222.215.20
ns18.222.215.20da2