Math question

[Guest]

Hi i want to start off by saying i think i am horrible at math but i need help. I am trying to find out the total percentage of nutrients in a certian batch of nutrients.

This is how i think its done buy im not sure if im right.

Nutrients come in npk values. Nitrogen, phosphorus and potassium. 2-1-1 for example 2% nitrogen 1% phosphorus and 1% potassium

Example.

Nutrient 1 = 2-1-1
Nutrient 2 = 0-5-2
Nutrient 3 = 1-0-1

Ok so i am trying to figure out the percent of the total parts per million number.

Nutrient 1 raised the ppms up to 500
Nutrient 2 raised the ppms up to 700
Nutriend 3 raised the ppms up to 1000

So i take the total ppm of 1000 and subtract each total ppms raised of each nutrient.

Nutrient 1 raised the total by 500
Nutrient 2 raised the total by 200
And nutrient 3 raised the total by 300

So i then take the total ppm of 1000 and divide it by each of the numbers i just got

1000/500=2
1000/200=5
1000/300=3.3

Then i take 100 and divide by those numbers

100/2=50
100/5=20
100/3.3=30

Then i take the original npk value of each nutrient and x's by .50 or .20 or .30?

So nutrient 1 with the npk value of 2-1-1 would be

2 x .50 = 1
1x .50 = .5
1x .50= .5

Nutrient 2 with thw npk value of 0-5-2 would be

0 x .20 = 0
5 x .20 = 1
2x .20 = .4

Nutrient 3 with an npk value of 1-0-1 would be

1 x .30 =.3
0 x .30= 0
1x .30 = .3

So the total of my npk solution would be 1.3-1.5-1.2

Is this right? I kinda stumbled onto this equation and i juat want to know if its correct?

The reason i am doubting myself is because i started to think that if one of my nutrients also has another value instead of the original npk values, like if there was also 20% calcium in the mix as well and i get a total of 100 ppms from that nutrient woud that effect the percents im getting?

I really hope all this makes sense lol.

[shyamjayakannan]

yes this is correct. As for the calcium content, it will affect the percentage values. Though it won't contribute to the npk amounts, it will still add to the total ppm and so the npk values will decrease.

But, the intermediate steps are confusing and there is a better way to look at it. Would you like me to explain?