document.write( "Question 1192482: Kevin and randy must have a jar containing 36 coins, all of which are either quarter or nickel. The total value of the coins in the jar is $4.60. How many of each type of coin do they have? \n" ); document.write( "
Algebra.Com's Answer #824372 by greenestamps(13216) You can put this solution on YOUR website! \n" ); document.write( "The other tutor showed a good typical formal algebraic solution. \n" ); document.write( "You can get some good mental exercise by solving the problem informally using logical reasoning and simple mental arithmetic. \n" ); document.write( "(1) 36 coins all nickels would have a value of $1.80 \n" ); document.write( "(2) The actual total was $4.60 \n" ); document.write( "(3) The difference is $2.80 \n" ); document.write( "(4) The value of each quarter is $0.20 more than the value of each quarter \n" ); document.write( "(5) The number of quarters is $2.80/$0.20 = 14 \n" ); document.write( "(6) The number of nickels is 36-14=22 \n" ); document.write( "ANSWER: 14 quarters and 22 nickels \n" ); document.write( "CHECK: 14($0.25)+22($0.05) = $3.50+$1.10 = $4.60 \n" ); document.write( " \n" ); document.write( " |