document.write( "Question 594117: Right now, Daniel is 8 years older than his cousin Zach. Two years from now, Daniel will be 3 times as old as Zach. How old is Daniel now? \r
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document.write( "I tried:
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document.write( "Daniel = x+8
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document.write( "Zach= x\r
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document.write( "In two years: 3x = 2+x
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document.write( "3x - x = 2
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document.write( "2x = 2
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document.write( "x = 1
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document.write( "x + 8 = 9
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document.write( "Therefore Daniel is 9.
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document.write( "But that is incorrect! \n" );
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Algebra.Com's Answer #376617 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Let x = Zach's age\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So if \"Daniel is 8 years older than his cousin Zach\" and Zach is x years old, then Daniel is x+8 years old\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In two years, their ages will be\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Zach's age in 2 years = x+2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Daniel's age in 2 years = (x+8)+2 = x+10\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So if \"Two years from now, Daniel will be 3 times as old as Zach\", this means we have the equation \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Daniel's Age In Two Years = 3*(Zach's Age In Two Years)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + 10 = 3(x+2)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "I'll let you solve the equation x + 10 = 3(x+2) for x. Let me know what you get. \n" ); document.write( " |