(7/2-5/2)÷5/2
=1÷5/2
=0.4
=40%
当a是b的5分之2,a是c的7分之2时,c比b多40%
当a是b的5分之2,a是c的7分之2时,c比b多百分之多少?
当a是b的5分之2,a是c的7分之2时,c比b多百分之多少?
数学人气:527 ℃时间:2020-01-30 15:57:59
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