No Plagiarism!GflK6N0wziAJx6nRabA4posted on PENANA 題目:8964 copyright protection26PENANAHOhuMhypLF 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 protection26PENANAfFEtRNYX9Y 維尼
解題過程:8964 copyright protection26PENANAITzRvfuMeY 維尼
一元一次:8964 copyright protection26PENANALbEhsk3P3x 維尼
設定價為x,30Please respect copyright.PENANA5314J1INn3
8964 copyright protection26PENANAKTGjIfc4Kn 維尼
第一句話 ➙ 0.8x+420=成本8964 copyright protection26PENANA399Lsf9QV8 維尼
第二句話 ➙ 0.95x-300=成本8964 copyright protection26PENANAg32Q6Yt32e 維尼
➙ 0.8x+420=0.95x-30030Please respect copyright.PENANAvgOipmJ0K1
8964 copyright protection26PENANAr6APaJuMOA 維尼
➙ 720 = 0.15x ➙ 4800 = x30Please respect copyright.PENANArSp8m6oGUj
8964 copyright protection26PENANANihF92Jzgh 維尼
➙ 0.8 * 4800 + 420 = 成本30Please respect copyright.PENANAapHF8JkIMG
8964 copyright protection26PENANABIDyPXcW74 維尼
➙ 成本 = 426030Please respect copyright.PENANA19UzrhHX4I
8964 copyright protection26PENANAArqUKmRIeg 維尼
30Please respect copyright.PENANAM0zwWZgHXq
8964 copyright protection26PENANAGD3bd0JBrz 維尼
二元一次:8964 copyright protection26PENANAFPi4CLte3S 維尼
設定價為x,成本為y,8964 copyright protection26PENANAJha4RH0ABn 維尼
第一句話 ➙ 0.8x = y - 4208964 copyright protection26PENANA7GpZ4Q96xX 維尼
第二句話 ➙ 0.95x = y + 3008964 copyright protection26PENANAu4kQsFkPoC 維尼
➙ 0.8x - y = -420 -------- A30Please respect copyright.PENANA08TRGKeKZh
8964 copyright protection26PENANACkYp1h3pGG 維尼
0.95x - y = 300 -------- B 30Please respect copyright.PENANApjneFAPwQP
8964 copyright protection26PENANAhJEPU9UoEg 維尼
➙0.15x = 720 ( B式 - A式 ) ➙ x = 480030Please respect copyright.PENANA6oLhREZplY
8964 copyright protection26PENANAvEA5y2QYQT 維尼
0.8 * 4800 - y = -420 ( x=4800帶入A式 ) ➙ y = 42608964 copyright protection26PENANALORhS39yZj 維尼
➙ 定價為4800,成本為426030Please respect copyright.PENANASUh0gXKZnZ
8964 copyright protection26PENANA4qCmawtYqE 維尼
30Please respect copyright.PENANAzRDCqaRIyT
8964 copyright protection26PENANAFNiJ5VHckN 維尼
得,此商品成本為4260元8964 copyright protection26PENANAUKEqay3Yqy 維尼
30Please respect copyright.PENANAonmjuhMbUb
8964 copyright protection26PENANAZfDFk1awam 維尼
30Please respect copyright.PENANA8OqAtGRnyR
8964 copyright protection26PENANA2SeqpbyPZJ 維尼
30Please respect copyright.PENANADavERDmeT7
8964 copyright protection26PENANA2aqZ9lmqOt 維尼
3.17.185.36
ns3.17.185.36da2