5角=0.5元,
(1×40-33)÷(1-0.5),
=7÷0.5,
=14(枚),
40-14=26(枚),
答:1元的有26枚,5角的有14枚.
1元和5角的硬币共40枚,有33元.问1元和5角的硬币各多少枚?
1元和5角的硬币共40枚,有33元.问1元和5角的硬币各多少枚?
数学人气:643 ℃时间:2019-12-12 06:05:01
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