document.write( "Question 1164273: A nut mixture consists of almonds and cashews. Almonds are $4.45 per pound, and cashews are $6.45 per pound. How many pounds of each type of nut should be mixed to produce 15 lbs selling for $5.25 per pound? \n" ); document.write( "
Algebra.Com's Answer #788583 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "A typical setup using the usual formal algebraic method: \n" ); document.write( "x pounds of almonds at $4.45 per pound, plus (15-x) pounds of cashews at 6.45 per pound, equals 15 pounds at $5.25 per pound: \n" ); document.write( " \n" ); document.write( "The solution uses basic algebra; but some of the calculations are not simple. \n" ); document.write( "I leave it to you to finish the solution using that method. \n" ); document.write( "Here is a quick an easy way to solve two-part mixture problems like this, if a formal algebraic solution is not required. \n" ); document.write( "(1) Picture the three prices on a number line: 4.45, 5.25, and 6.45. \n" ); document.write( "(2) The difference between 4.45 and 6.45 is 2.00; the difference between 4.45 and 5.25 is 0.80. The ratio 0.80/2.00 is 2/5. \n" ); document.write( "(3) So the price per pound of the mixture is 2/5 of the way from the lower price to the higher. That means 2/5 of the mixture has to be the higher priced nuts. \n" ); document.write( "ANSWER: 2/5 of 15 pounds, or 6 pounds, of cashews; the other 9 pounds of almonds. \n" ); document.write( "CHECK: \n" ); document.write( "6(6.45)+9(4.45) = 38.70+40.05 = 78.75 \n" ); document.write( "15(5.25) = 78.75 \n" ); document.write( " \n" ); document.write( " |