數學2題....急!!!! (20點)

[匿名]

2008-03-13 4:30 am

請把步驟全打出來...謝謝...
1, The instructions on a container of pesticide concentrate are:

"Make a 15 in 250 solution using water, and spray monthly"
If 600 ml of spray are required, how much concentrate and how much water should be mixed?

2, A potting mix is made of 2 parts sand, 1/3 psrt organic matter and 5 parts loam.
How much sand and loam should be used if 8 buckets of organic matter are available?

回答 (1)

大小二便

2008-03-13 7:11 am

✔ 最佳答案

我係護士黎既, 你可以睇番我既資料, 多數都係醫護問題[我多數唔係copy and paste比書本答案, 係於實際情況比答案, 但只是就發問者提出個人意見, 如發問者問的問題失實或不詳細, 就只以問題作出解答, 不一定是最終treatment既答案, 因為人的機制很複雜, 不是用一句問題就可看出全部既因素]

呢個係我既blog , 歡迎參觀[有好多醫護知識係裏面]
答:
好簡單
1. 15/250 = x/600 x=36ml
2. 16buckets
第二條唔肯定, 因為唔太似醫學問題
但係第一條必肯定

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