Question

A dairy farmer wants to mix a 75% protein supplement and a standard 25% protein ration to make 1500 pounds of a high grade 45%protein ration. How manypounds of each should be use!

Answer 1

Okay, here we have this:

Protein Supplement=75%--------->x pounds

Standard Protein= 25% ---------->(1500-x) pounds

Mixture 45% ----------------> 1500

75%x+25%(1500-x)=45%*1500

75x+25(1500-x)=67500

75x+37500-25x=67500

50x=30000

x=30000/50

x=600 pounds Protein Supplement

900 pounds standar Protein