document.write( "Question 142967: Could any one help me with this system of linear equation as a word problem. Thank you in advance for your help.\r
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document.write( "A shopper buys three oranges and five lemons for $10.26, while a second shopper buys four lemons and six oranges for $11.16. What is the price of each fruit? \n" );
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Algebra.Com's Answer #104023 by Earlsdon(6294)![]() ![]() ![]() You can put this solution on YOUR website! Let (O) = the price of one orange and (L) = the price of one lemon. From the problem description, you can write the two equations: \n" ); document.write( "1) 3(O) + 5(L) = $10.26 \"A shopper buys 3 oranges 3(O) and 5 lemons 5(L) for $10.26,...\" \n" ); document.write( "2) 6(O) + 4(L) = $11.16 \"...a second shopper buys 4 lemons 4(L)and 6 oranges 6(O) for $11.16.\" \n" ); document.write( "To solve this system of equations, first multiply equation 1) by 2 then subtract equation 2) from equation 1a) so that you can eliminate the variable (O). \n" ); document.write( "1a) 2(3(O)+5(L) = $10.26) \n" ); document.write( "1a) 6(O)+10(L) = $20.52 \n" ); document.write( "2) -(6(O) + 4(L) = $11.16) Subtract equation 2) from equation 1a) \n" ); document.write( "-------------------------- \n" ); document.write( "6(L) = $9.36 Divide both sides by 6. \n" ); document.write( "(L) = $1.56 This is the price of one lemon. \n" ); document.write( "Substitute L = $1.56 into equation 1) and solve for (O). \n" ); document.write( "1) 3(O) + 5($1.56) = $10.26 Simplify and solve for (O). \n" ); document.write( "3(O) + $7.80 = $10.26 Subtract $7.80 from both sides. \n" ); document.write( "3(O) = $2.46 Divide both sides by 3. \n" ); document.write( "(O) = $0.82 This is the price of one orange. \n" ); document.write( " \n" ); document.write( " |