GRADE 10 MATH HELP exam tommorrow

One type of fertilizer has 40% nitrogen and a second type has 20% nitrogen. How much of each type of fertilizer should be mixed to make 800 kg of fertilizer that has 25% nitrogen?

Answer #1

HELPP :(

Answer #2

no problem!

Answer #3

thank you :)

Answer #4

well, you have to find your constant… soo… .25(k)=800 so you divide 800 by .25 and get… 3200kg. so thats your constant. So then… .4(3200)+.2(3200) should be your answer? But I’m not sure… 1280+640=1920kg? But I’m not sure… its been awhile.

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