document.write( "Question 1054294: John has a jarful of quarters and nickels. There are 104 coins in the jar. The value of the coins is $16.60. How many of each type of coins are there.\r
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Algebra.Com's Answer #669501 by addingup(3677)![]() ![]() You can put this solution on YOUR website! Let quarters be q and nickels n \n" ); document.write( "q+n = 104 subtract n from both sides: \n" ); document.write( "q = 104-n we'll use this value for q next \n" ); document.write( "------------ \n" ); document.write( "0.25q+0.05n = 16.60 substitute for q \n" ); document.write( "0.25(104-n)+0.05n = 16.60 \n" ); document.write( "26-0.25n+0.05n = 16.60 \n" ); document.write( "-0.20n = -9.40 \n" ); document.write( "n = 47 and q: \n" ); document.write( "q = 104-47 = 57 \n" ); document.write( "-------------------------- \n" ); document.write( "47*0.05 = 2.35 \n" ); document.write( "57*0.25 = 14.25 \n" ); document.write( "Total. . .16.60 correct \n" ); document.write( ": \n" ); document.write( "John \n" ); document.write( " |