Homework Help: college alg

Posted by mercy on Thursday, February 23, 2012 at 5:37pm.

A meat market has ground beef that is 40% fat and extra lean ground beef that is 15% fat. How many pounds of each(ground beef and extra lean) must be together to get total of 50 pounds of "lean" ground beef that is 25% fat?

college alg - Reiny, Thursday, February 23, 2012 at 6:56pm
amount of the 40% beef --- x
amount to the 15% beef --- 50-x

solve for x

.4x + .15(50-x) = .25(50)
I would multiply each term by 100

40x + 15(50-x) = 25(50)
etc

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