there is a 10 kg watermelon,95% of it is water.If we put the watermelon in tthere is a 10 kg watermelon,95% of it is water.If we put the watermelon in the sunshine for some time,and then only 90% of it is water.Now the watermelon weighs how much ( )
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there is a 10 kg watermelon,95% of it is water.If we put the watermelon in tthere is a 10 kg watermelon,95% of it is water.If we put the watermelon in the sunshine for some time,and then only 90% of it is water.Now the watermelon weighs how much ( )
there is a 10 kg watermelon,95% of it is water.If we put the watermelon in t
there is a 10 kg watermelon,95% of it is water.If we put the watermelon in the sunshine for some time,and then only 90% of it is water.Now the watermelon weighs how much ( )kg 要计算过程和结果。 是不是这样的 设新西瓜重为X 列方程: 10*(1-95%)=X*(1-90%) 解出X=5kg.
there is a 10 kg watermelon,95% of it is water.If we put the watermelon in tthere is a 10 kg watermelon,95% of it is water.If we put the watermelon in the sunshine for some time,and then only 90% of it is water.Now the watermelon weighs how much ( )
设Xg水被蒸发
(10*95%)/(10-X)=1-90%
则X=5
剩下10-5=5
现在有一个十公斤的西瓜,这其中95%是水。如果把这个西瓜放到阳光下一会,这时它的90%是水,那么现在西瓜重()公斤
有一个十公斤的西瓜,含水量95%,如果我们把它放在太阳下一段时间,就会只剩下10%的水分。那么现在西瓜的重量有多少公斤?
应该还是十公斤吧。呵呵。只是内部水分蒸发。其他的不变吧。瞎猜的。哈哈
这儿有一个十公斤的西瓜,它的95%是水。如果我们把西瓜放在。。。
现在有一个十公斤的西瓜,这其中95%是水。如果把这个西瓜放到阳光下一会,这时它的90%是水,那么现在西瓜重()公斤?
1. 10*95%=9.5
2. 9.5*90%=8.55
3. 9.5-8.55=0.95
4. 10-0.95=9.05
答:此时西瓜重9.05kg.