document.write( "Question 1164414: Gabriel is 4 years older than Nicole. In 5 years the sum of their ages will be 66. How old is Gabriel now? \n" ); document.write( "
Algebra.Com's Answer #788819 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Ikleyn's is correct, but here is the way I would do it.  I think it best\r\n" );
document.write( "when two quantities are mentioned, to always choose the SECOND quantity\r\n" );
document.write( "mentioned to be represented by an unknown letter, not the first one\r\n" );
document.write( "mentioned, even though that was the one asked for.\r\n" );
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Gabriel is 4 years older than Nicole.
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document.write( "The SECOND quantity mentioned in that sentence is Nicole's age, so Nicole's\r\n" );
document.write( "age is the one that I think we should use the unknown N to represent. So\r\n" );
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document.write( "N = Nicole's age now.\r\n" );
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document.write( "Then we define the quantity mentioned first in the sentence, Gabriel's age,\r\n" );
document.write( "in terms of Nicole's by that sentence\r\n" );
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Gabriel is 4 years older than Nicole.
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document.write( "So Gabriel's age is N+4.\r\n" );
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In 5 years,...
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document.write( "We add 5 to each of their ages:\r\n" );
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document.write( "N+5 = Nicole's age in 5 years.\r\n" );
document.write( "(N+4)+5 = N+4+5 = N+9 = Gabriel's age in 5 years.\r\n" );
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...the sum of their ages will be 66.
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document.write( "(N+5)+(N+9) = 66\r\n" );
document.write( "    N+5+N+9 = 66\r\n" );
document.write( "      2N+14 = 66\r\n" );
document.write( "         2N = 52\r\n" );
document.write( "          N = 26   <-- Nicole's age now.\r\n" );
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Gabriel is 4 years older than Nicole.
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document.write( "So Gabriel is 26+4 = 30.\r\n" );
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document.write( "Edwin
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