document.write( "Question 769402: a total of 324 coins of 20 paise and 25 paise make a sum of Rs 71, then the number of 25 paise coins is......... \n" ); document.write( "
Algebra.Com's Answer #468847 by ramkikk66(644)\"\" \"About 
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document.write( "a total of 324 coins of 20 paise and 25 paise make a sum of  Rs 71, then the number of 25 paise coins is.........\r\n" );
document.write( "Ans:\r\n" );
document.write( "Let number of 25 paise coins be x\r\n" );
document.write( "Then number of 20 paise coins = (324 - x)\r\n" );
document.write( "Value of the 25 paise coins = (25*x) paise\r\n" );
document.write( "Value of the 20 paise coins = (20*(324 - x)) paise\r\n" );
document.write( "Total value = Rs 71 = 7100 paise\r\n" );
document.write( "So we have the equation\r\n" );
document.write( "\"25%2Ax+%2B+20%2A%28324+-+x%29+=+7100\" Solve for x\r\n" );
document.write( "\"25%2Ax+%2B+6480+-+20%2Ax+=+7100\"\r\n" );
document.write( "\"5%2Ax+=+7100+-+6480+=+620\"\r\n" );
document.write( "\"x+=+620%2F5+=+124\"\r\n" );
document.write( "No. of 25p coins = 124\r\n" );
document.write( "No. of 20p coins = 324 - 124 = 200\r\n" );
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