Sunday, October 18, 2009

Elona's Scribe Post for October 16, 2009

Question 20

A bag of fertilizer is labeled, 15-20-10. this means that it contains 15% of Nitrogen, 20% of Phosphorus and 10% of Potassium by weight. How many kilograms of
Nitrogen, Phosphorus and Potassium are in the bag?


To find out, you need to know how much kilograms there are in each ingredient.
15% of 30= 4.5 kg

20% of 30= 6 kg

10% of 30= 3 kg

4.5+6+3= 13.5 kg

There are 4.5kg of Nitrogen, 6kg of Phosphorus, and 3kg of potassium for a total of 13.5kg.

1 comment:

Harvey841 said...

I don't get your answer. How did you get 4.5g, etc. Perhaps you should make a ratio table and show use how you got those.


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