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数学
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奶奶腌制咸鸭蛋,将500g食盐放入2000g水中,盐是水的几分之几?盐占盐水的几分之几?
人气:499 ℃ 时间:2019-08-20 19:56:03
解答
500÷2000=
1
4
;
500÷(500+2000)
=500÷2500,
=
1
5
.
答:盐是水的
1
4
,盐占盐水的
1
5
.
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