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)\"\" \"About 
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n = number of 5 centavo coins
\n" ); document.write( "d = number of 10 centavo coins\r
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\n" ); document.write( "\n" ); document.write( "5n + 10d = 450
\n" ); document.write( "d = n + 6\r
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\n" ); document.write( "\n" ); document.write( "Plug in the second equation into the first.\r
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\n" ); document.write( "\n" ); document.write( "5n + 10n + 60 = 450
\n" ); document.write( "15n = 390
\n" ); document.write( "n = 26\r
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\n" ); document.write( "\n" ); document.write( "Edna has 26 five-centavo coins and 32 ten-centavo coins.
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