document.write( "Question 1195103: John had a total of 319 blue and red envelopes. If 1/3 the number of blue envelopes was the same as 2/5 the number of red envelopes, how many blue envelopes did he have? \n" ); document.write( "
Algebra.Com's Answer #827576 by MathTherapy(10555)\"\" \"About 
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\n" ); document.write( "John had a total of 319 blue and red envelopes. If 1/3 the number of blue envelopes was the same as 2/5 the number of red envelopes, how many blue envelopes did he have?
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Let number of blue envelopes be B\r\n" );
document.write( "Then number of red envelopes = 319 - B\r\n" );
document.write( "As \"1%2F3\" of the blue is the same as \"2%2F5\" of the red, we get: \r\n" );
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document.write( " 5B = 6(319 - B) ----- Cross-multiplying\r\n" );
document.write( " 5B = 1,914 - 6B\r\n" );
document.write( "11B = 1,914
Number of blue, or 
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