document.write( "Question 1149437: Lauren always throws loose change into a pencil holder on her desk and takes it out every two weeks. This time it is all nickels and dimes. There are 7 times as many dimes as nickels, and the value of the dimes is $3.90 more than the value of the nickels. How many nickels and dimes does Lauren have? \n" ); document.write( "

Algebra.Com's Answer #770772 by ikleyn(52787) $\"\"$ $\"About$

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document.write( "10*(7x) - 5x = 390   cents\r\n" );
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document.write( "70x - 5x = 390\r\n" );
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document.write( "65x      = 390\r\n" );
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document.write( "  x      = 390/65 = 6.\r\n" );
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document.write( "ANSWER.  6 nickels and 6*7 = 42 dimes.\r\n" );
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document.write( "CHECK.   42*10 - 3*6 = 390 cents.   ! Precisely correct !\r\n" );
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