document.write( "Question 1208177: Hi
\n" ); document.write( "Mr Thomas spent $1972 on cars and dolls. He bought 3 times as many cars as dolls. Each doll cost $10 more than each car. She paid $476 more for the cars than the dolls. What is the cost of a doll. \n" ); document.write( "

Algebra.Com's Answer #846499 by MathTherapy(10552) $\"\"$ $\"About$

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document.write( "Hi\r\n" );
document.write( "Mr Thomas spent $1972 on cars and dolls. He bought 3 times as many cars as dolls. Each doll cost $10 more than each car. She paid $476 more for the cars than the dolls. What is the cost of a doll.\r\n" );
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document.write( "Let cost of ALL dolls purchased be x\r\n" );
document.write( "Since $476 MORE was spent on cars than dolls, then amount spent on cars was x + 476\r\n" );
document.write( "Since a total of $1,972 was spent, we get: x + x + 476 = 1,972\r\n" );
document.write( "                                                    2x = 1,972 - 476\r\n" );
document.write( "                                                    2x = 1,496\r\n" );
document.write( "                              Cost of ALL dolls, or \r\n" );
document.write( "                           So, cost of ALL cars = 1,972 - 748 = $1,224\r\n" );
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document.write( "Let price of each doll, be D\r\n" );
document.write( "Then price of each car = D - 10\r\n" );
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document.write( "Number of dolls purchased: \r\n" );
document.write( "Number of cars purchased: \r\n" );
document.write( "Since he bought 3 times as many cars as dolls, we get the following\r\n" );
document.write( "NUMBER-OF-ITEMS equation:   \r\n" );
document.write( "                           \r\n" );
document.write( "                              --- Canceling GCF, 12, in numerators\r\n" );
document.write( "                                102D = 187(D - 10) --- Cross-multiplying\r\n" );
document.write( "                                102D = 187D - 1,870\r\n" );
document.write( "                         102D - 187D = - 1,870\r\n" );
document.write( "                               - 85D = - 1,870\r\n" );
document.write( "            Cost of each doll, or

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