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student3112

percentage

請問點計?Thanks

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  • eric
    2019-11-03 22:23:43
    Solve 1.1×0.6x+(1-r/100)×0.4x=x, where x is the original weight and the copper decreases by r %
  • eric
    2019-11-03 22:25:48
    Correction: Solve 1.1×0.6x+(1-r/100)×0.4x=x, where x is the original weight of the bar and the copper decreases by r %
    •  eric 2019-11-03 22:23:43
    • Solve 1.1×0.6x+(1-r/100)×0.4x=x, where x is the original weight and the copper decreases by r %
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