document.write( "Question 1199194: James spent $6780 on some watches and clocks. The amount spent on watches was $2820 more than the amount spent on the clocks. He bought 3/5 as many clocks as watches. Each clock cost $25 less than each watch. What was the total number of watches and clocks bought by James?\r
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Algebra.Com's Answer #833109 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "James spent $6780 on some watches and clocks. The amount spent on watches was $2820 more than the amount spent on the clocks. He bought 3/5 as many clocks as watches. Each clock cost $25 less than each watch. What was the total number of watches and clocks bought by James?
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Let amount spent on watches be W\r\n" );
document.write( "Since a total of $6,780 was spent on watches and clocks, amount spent on clocks = 6,780 - W\r\n" );
document.write( "Since amount spent on watches was $2,820 more than what was spent on clocks, then amount spent on clocks = W - 2,820\r\n" );
document.write( "                      We then get: 6,780 - W = W - 2,820\r\n" );
document.write( "                                     - W - W = - 2,820 - 6,780\r\n" );
document.write( "                                        - 2W = - 9,600\r\n" );
document.write( "Amount spent on watches =, or \r\n" );
document.write( "Since $4,800 was spent on watches, amount spent on clocks = 6,780 - 4,800 = $1,980\r\n" );
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document.write( "Now, let number of watches purchased be W, and cost of each watch, C\r\n" );
document.write( "Then number of clocks purchased = \"matrix%281%2C3%2C+%283%2F5%29W%2C+%22=%22%2C+3W%2F5%29\", and cost of each clock: C - 25\r\n" );
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document.write( "With total spent on watches being 4,800, we get: WC = 4,800 ----- eq (i)\r\n" );
document.write( "Also, with total spent on clocks being $1,980, we get: \r\n" );
document.write( "                                                          3WC - 75W = 9,900 ----- Multiplying by LCD, 5 ----- eq (ii)\r\n" );
document.write( "                                                     3(4,800) - 75W = 9,900 ----- Substituting 4,800 for WC in eq (ii)\r\n" );
document.write( "                                                       14,400 - 75W = 9,900\r\n" );
document.write( "                                                              - 75W = 9,900 - 14,400\r\n" );
document.write( "                                                              - 75W = - 4,500\r\n" );
document.write( "                          Numner of watches purchased, or \r\n" );
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document.write( "                        Number of clocks purchased:
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