document.write( "Question 1142163: A grocer wishes to mix some nuts worth $.90 per pound with some nuts worth $1.60 per pound to make 175 pounds of a mixture that is worth $1.3o per pound. How much of each should she use? \n" ); document.write( "
Algebra.Com's Answer #762841 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Try this for an easier and faster way to solve \"mixture\" problems like this. \n" ); document.write( "(1) 1.30 is 4/7 of the way from 0.90 to 1.60. (0.90 to 1.60 is .70; 0.90 to 1.30 is .40; .40/.70 = 4/7) \n" ); document.write( "(2) Therefore 4/7 of the mixture must be the more expensive nuts. \n" ); document.write( "ANSWER: 4/7 of 175 pounds = 100 pounds of the $1.60 per pound nuts; the rest, 75 pounds, of the $0.90 per pound nuts. \n" ); document.write( "The idea behind this method is that the ratio in which the two ingredients must be mixed is exactly determined (in a linear fashion) by where the target price per pound lies between the per pound prices of the two ingredients. \n" ); document.write( " |