document.write( "Question 1150101: David has a total of 4.10 pesos in 5 cent, 10 cent and 25 cent coins. He has twice as many 5 cent coins and two more 25 cent coins than 10 cent coins. How many 10 cent coins does he have? \n" ); document.write( "

Algebra.Com's Answer #771458 by ikleyn(52794) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "Coins:  10-cent   x\r\n" );
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document.write( "         5-cent   2x\r\n" );
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document.write( "        25-cent   x+2\r\n" );
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document.write( "Money equation\r\n" );
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document.write( "    10x + 5*(2x) + 25*(x+2) = 410  cents\r\n" );
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document.write( "    10x + 10x + 25x + 50 = 410\r\n" );
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document.write( "    45x                  = 410-50 = 360\r\n" );
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document.write( "      x                           = 360/45 = 8\r\n" );
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document.write( "ANSWER.  8  of the 10-cent coins;  8*2 = 16  of the 5 cent-coins  and  8+2 = 10 25-cent coins.\r\n" );
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document.write( "CHECK.   8*10 + 16*5 + 25*10 = 410 cents.   ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "From my post, learn how to solve such problems using one single variable from the very beginning to the end.\r
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