document.write( "Question 1156697: susan is 3 times as old as blake is now. In fifteen years, she will be 10 years older than blake. how old are they?
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Algebra.Com's Answer #779436 by ikleyn(52797) $\"\"$ $\"About$

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document.write( "Read this sentence \"In fifteen years, she will be 10 years older than Blake.\"\r\n" );
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document.write( "It has very deep meaning.\r\n" );
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document.write( "It means that NOT ONLY in 15 years Susan will be 10 years older than Blake.\r\n" );
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document.write( "It means that ALWAYS Susan will be (and is; and was) 10 years older than Blake.\r\n" );
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document.write( "In particular, right now she IS 10 years older than Blake.\r\n" );
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document.write( "In other words,  S = B + 10,\r\n" );
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document.write( "therefore, for their current age you have this equation\r\n" );
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document.write( "    3B = B + 10,\r\n" );
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document.write( "which implies\r\n" );
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document.write( "    3B - B = 10\r\n" );
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document.write( "    2B     = 10\r\n" );
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document.write( "     B     = 10/2 = 5.\r\n" );
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document.write( "ANSWER.  Blake is 5 years old; Susan is 3*5 = 15 years old.\r\n" );
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