Question 1101283
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Dairy Farmer wants to mix a 75% protein supplement any standard 25% protein ratio between a 1800 lb of a high grade 70% protein radiation. 
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WHAT?



Just guessing the farmer has  75% and 25% protein supplements and wants 1800 pounds of 70% protein mixture.
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Let x be amount of the 75% material.
{{{(25*(1800-x)+75x)/1800=70}}}
Solve for x and evaluate 1800-x.