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Question 1042980: A farmer has two types of feed. One has 5% digestible protein and the other 15% digestible protein. How much of each type will she need to mix 100lb of 12% digestible protein feed?
Let 5% digestible protein = x lb
Let 15% digestible protein = y lb
Total feed = 100 lb
So, the first equation:
But, my problem is, how do I get the second equation?
Answer by ikleyn(52803)   (Show Source):
You can put this solution on YOUR website! .
A farmer has two types of feed. One has 5% digestible protein and the other 15% digestible protein. How much of each type will she need to mix 100lb of 12% digestible protein feed?
Let 5% digestible protein = x lb
Let 15% digestible protein = y lb
Total feed = 100 lb
So, the first equation:
But, my problem is, how do I get the second equation?
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The second equation is
0.05x + 0.15y = 0.12*100.
There is a bunch of lessons on mixture problems in this site that teach you on how to solve them
- Mixture problems
- More Mixture problems
- Solving typical word problems on mixtures for solutions
- Word problems on mixtures for antifreeze solutions
- Word problems on mixtures for dry substances like coffee beans, nuts, cashew and peanuts
- Word problems on mixtures for dry substances like candies, dried fruits
- Word problems on mixtures for dry substances like soil and sand
- Word problems on mixtures for alloys
- Typical word problems on mixtures from the archive
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Comment from student: Thank you for the second equation! I have re-read the question for like a hundred times,
but I was still unable to figure out the second equation. Thank you again, but I'm still confused.
I mean, why do the 0.12 need to be multiplied with 100? Ah, I got it! I read the links to the lessons provided by you,
and it helps me a tonne! Thanks, I'll bookmark it.
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My response: I am glad to see/to hear it.
One more notice: You have your free of charge online textbook in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK
full of useful lesson, well structured and logically organized.
You also have the other free of charge online textbook in this site
- GEOMETRY - YOUR ONLINE TEXTBOOK
with the same features . . .
You also have MEGA-TONNES other my lessons in this site on Pre-Algebra and Algebra-II.
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