一瓶盐水,盐和水的重量比例是1:24,如果再放入75克水,这时盐与水的重量比是1:27,原来瓶内盐水重多少kg

2025-04-07 02:36:08
推荐回答(4个)
回答1:

设原来盐有x 则水是24x
x:(24x+75)=1:27
24x+75=27x
27x-24x=75
3x=75
x=25

原来盐水重 25x(1+24)=625克

回答2:

解:设原来瓶内盐水重x克,则:原瓶内盐重(1/25)x克,原瓶内水重(24/25)x克,
所以:[(1/25)*x]:[(24/25)*x+75]=1:27
x:(24x+1875) =1:27
24x+1875=27x
x=625(克)=0.625千克

回答3:

原来盐重量为25克:水重量为24×25克=盐水重量
现在盐重量为25克:水重量为24×25克+75=1:27=盐水重量
所以:原来盐重量为25克:水重量为24×25克

回答4:

原来瓶内盐水重:
75÷﹙27-24﹚×﹙24+1﹚
=75÷3×25
=25×25
=625克
=0.625千克

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