设男生y人,女生x人.
男生比女生多25%,可列式为:(y - x)/x =1/4 ````````(1)
女生比男生少m,可列式为:(y - x)/y =m ````````(2)
求m.
由(1)得:x/(y - x) = 4 => x/(y - x) + 1 = 5 =>y/(y - x) = 5
=>(y - x)/y = 1/5
=>m=20%
六年一班男生人数比女生人数多25%,那么女生人数比男生人数少百分之几?
六年一班男生人数比女生人数多25%,那么女生人数比男生人数少百分之几?
数学人气:344 ℃时间:2019-10-11 13:28:03
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