mr.liu always saves 25% of his income . when his income increases by 5% , his saving increases by $48 . find his original income.
刘先生始终节省25%的收入.当他的收入增加5%,他的储蓄增加48美元.发现他原来的收入.
仅供参考 欢迎采纳 希望帮到你
mr.liu always saves 25% of his income . when his income increases by 5% , his saving increases by $48 . find his original income.
刘先生始终节省25%的收入.当他的收入增加5%,他的储蓄增加48美元.发现他原来的收入.
仅供参考 欢迎采纳 希望帮到你