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两道陈向东数学，忘朋友帮忙。
If a certain grove consists of 36 pecan trees, what was the yield per tree last year?
1) The yield per tree for the 18 trees in the northern half of the grove was 60 kilograms last year.
2) The yield per tree for the 18 trees in the eastern half of the grove was 55 kilograms last year.
第二道题：
Solution Y is 30 percent liquid X and 70 percent water. If 2 kilograms of water evaporate from 8 kilograms of solution Y and 2 kilograms of solution Y are added to the remaining 6 kilograms of liquid, what percent of this new solution is liquid X?
请热心的朋友们列出解题时的思维过程，别光写一个答案。答案我会实时公布。我感谢你的帮助。 |
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