document.write( "Question 1124338: Edna has saved P4.50 for the week consisting of 5 centavo and 10 centavo coins. How many 10 centavo coins does she has if she has 6 more 10 centavo coins than 5 centavo coins? \n" ); document.write( "
Algebra.Com's Answer #802315 by CubeyThePenguin(3113) You can put this solution on YOUR website! n = number of 5 centavo coins \n" ); document.write( "d = number of 10 centavo coins\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5n + 10d = 450 \n" ); document.write( "d = n + 6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Plug in the second equation into the first.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5n + 10n + 60 = 450 \n" ); document.write( "15n = 390 \n" ); document.write( "n = 26\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Edna has 26 five-centavo coins and 32 ten-centavo coins. \n" ); document.write( " |