document.write( "Question 16343: I have a really hard time on getting the formula on word problems. I read them, understand what they are asking, I even get the answer but cannot seem to translate the words on to the paper in a form of a equation.\r
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document.write( "The problem I am having trouble on is:
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document.write( "\"Batman is 20 years older then robin. In 4 years, Batman will be twice Robin age. How old are they now?\"\r
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document.write( "I get..
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document.write( "Robin=x
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document.write( "Batman=20+x(Batman older by 20 years )
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document.write( "Batman=2(20+x)( Batman where he is twice as Robin)\r
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document.write( "The answer I get is that Batman is 36 right now, and Robin is 16, because in 4 years Batman is going to be 40, and Robin 20, Batman is TWICE Robin's age. 20x2=40... \r
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document.write( "Please help me in getting Enlgish translated into Algebra equation.\r
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Algebra.Com's Answer #7972 by elima(1433)![]() ![]() ![]() You can put this solution on YOUR website! \"Batman is 20 years older then robin. In 4 years, Batman will be twice Robin age. How old are they now?\" \n" ); document.write( "Robin=x \n" ); document.write( "Batman=20+x(Batman older by 20 years ) \n" ); document.write( "Very good, you have this correct; \n" ); document.write( "But you do not have the next eqution correct; \n" ); document.write( "Batman will be twice Robin age; \n" ); document.write( "In your equation you have Batmans age; \n" ); document.write( "Batman=2(20+x) \n" ); document.write( "It should be; \n" ); document.write( "2x(Robins age) \n" ); document.write( "Batman is 20 years older then robin,In 4 years, \n" ); document.write( "20+x+4= \n" ); document.write( "Batman will be twice Robin age. \n" ); document.write( "2x \n" ); document.write( "So our equation would be; \n" ); document.write( "20+x+4=2x \n" ); document.write( "x+24=2x \n" ); document.write( "24=2x-x \n" ); document.write( "24=x \n" ); document.write( "So Robins age is 24; \n" ); document.write( "Batmans age; \n" ); document.write( "(24)+20=44 \n" ); document.write( "Now check; \n" ); document.write( "20+(24)+4=2(24) \n" ); document.write( "48=48 \n" ); document.write( "Hope you see where you went wrong, you were doing a good job though; \n" ); document.write( "=) \n" ); document.write( " |