作业帮there are 10 liters of alcohol in a container .after pouring out one liter ,fill it up with somewater;then repeat the experiment twice .what is the concentration of alcohol in the container now?
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there are 10 liters of alcohol in a container .after pouring out one liter ,fill it up with somewater;then repeat the experiment twice .what is the concentration of alcohol in the container now?
there are 10 liters of alcohol in a container .after pouring out one liter ,fill it up with some
water;then repeat the experiment twice .what is the concentration of alcohol in the container now?
there are 10 liters of alcohol in a container .after pouring out one liter ,fill it up with somewater;then repeat the experiment twice .what is the concentration of alcohol in the container now?
第一次后：10升剩下九升,加水浓度为90%；
第二次后：倒出的1升含有90%酒精,就是0.9升被倒出,剩下9-0.9=8.1升酒精,加水后浓度为81%；
第三次后：倒出的1升含有81%的酒精,就是0.81升被倒出,剩下8.1-0.81=7.29升,加水后浓度为72.9%.
另一种算法是100%X0.9^3=72.9%.
so the concentration of alcohol is 72.7%.
the concentration of alcohol in the container now：72.9%
容器里有十公升的酒精。倒出一公升后，加满水，然后重复两次。现在，容器里的酒精浓度是多少？
在容器中有10升酒精，倒出一升后，装装满水，然后再重复两次，现在容器中的酒精浓度多少？