document.write( "Question 517193: Kristin bought 1 pound of chocolate and 5 pounds of jelly beans for $9.24. Quwan bought 4 pounds of chocolate and 4 pounds of jelly beans for $18.40. How much does a pound of chocolate cost and how much does a pound of jelly beans cost? \n" ); document.write( "
Algebra.Com's Answer #344694 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Kristin bought 1 pound of chocolate and 5 pounds of jelly beans for $9.24. Quwan bought 4 pounds of chocolate and 4 pounds of jelly beans for $18.40. How much does a pound of chocolate cost and how much does a pound of jelly beans cost? \n" ); document.write( "------------ \n" ); document.write( "Equations: \n" ); document.write( "c + 5j = 9.24 \n" ); document.write( "4c+ 4j = 18.40 \n" ); document.write( "----------------------- \n" ); document.write( "Multiply thru the 1st equation by 4: \n" ); document.write( "4c + 20j = 4*9.24 \n" ); document.write( "4c + 4j = 18.40 \n" ); document.write( "---- \n" ); document.write( "Subtract and solve for \"J\": \n" ); document.write( "16j = 18.56 \n" ); document.write( "j = $1.16 (price of one lb of jelly beans) \n" ); document.write( "--------------- \n" ); document.write( "Solve for \"c\": \n" ); document.write( "c + 5j = 9.24 \n" ); document.write( "c + 5*1.16 = 9.24 \n" ); document.write( "c = 9.24-5.80 \n" ); document.write( "c = $3.44 (price of one lb of chodolate) \n" ); document.write( "========================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "========================= \n" ); document.write( " \n" ); document.write( " |