document.write( "Question 528328: Please help me. I keep getting stuck on this one:\r
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document.write( "Jack's employer gave him a bonus of $1600. He invested all of the money, some at 5%, some at 7%, and some at 8%. He invested three times more money at 8% than he did at 5%. At the end of 1 year, the total earned interest was $115.\r
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document.write( "What kind of mathematical model could be used to solve this problem and why?\r
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document.write( "Solve the problem.\r
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document.write( "Why couldn't you solve the problem is you didn't know that Jack invested three times more money at 8% than at 5%?\r
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document.write( "Thanks for your help. \n" );
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Algebra.Com's Answer #349244 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! (5%)(x) + (8%)(3x) + (7%)(1600 - 4x) = 115 \n" ); document.write( " |