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  3. If two liters of a solution that is 15 percent salt will be added to 5 liters of

If two liters of a solution that is 15 percent salt will be added to 5 liters of

游客2024-01-13  21
问题 If two liters of a solution that is 15 percent salt will be added to 5 liters of a solution that is 8 percent salt, what percent salt will the resulting solution contain?
选项 A、10％
B、7％
C、20％
D、15％
E、12％
答案 A
解析 两种solution混合后，共含有盐：2×15％+5×8％=0.7，而混合后一共有solution 2+5=7 liters，所以混合后最终Solution中含有盐分为=0.7/7=10％，A为正确答案。
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