document.write( "Question 29214: Suppose a country has only two denomination of coins: $0.05 coins and $0.07 coins. Determine all monetry values that can be obtained using only coins. \n" ); document.write( "
Algebra.Com's Answer #16029 by bmauger(101) ![]() You can put this solution on YOUR website! Start with your 5 cent piece. With it by itself you can come up with the values (in pennies) of: \n" ); document.write( "5, 10, 15, 20, 25... etc. e.g. all values divisible by 5 can be paid for. \n" ); document.write( "Now with a 7 cent piece and three five cent pieces you can come up: \n" ); document.write( "7, 12, 17, 22, 27 \n" ); document.write( "And with two 7 cent pieces and two nickels you can come up with: \n" ); document.write( "7, 14, 19, 24 \n" ); document.write( "Three 7-cent pieces & a nickel you can come up with: \n" ); document.write( "7, 14, 21, 26 \n" ); document.write( "Four 7-cent pieces... \n" ); document.write( "7, 14, 21, 28 \n" ); document.write( "Now looking at the list you'll see that we have values of: \n" ); document.write( "24=two seven cent pieces and two nickels \n" ); document.write( "25=five nickels \n" ); document.write( "26=three seven cent pieces and one nickel \n" ); document.write( "27=one seven cent piece and four nickels AND \n" ); document.write( "28=four seven cent pieces \n" ); document.write( "Since that covers 5 numbers in a row (24 through 28) you can create every number above by adding more nickels to one of the five numbers. \n" ); document.write( "For instance 106=26 + 80 = three seven cent pieces + (1 + 16) nickels... \n" ); document.write( " \n" ); document.write( "So you can make every number above 24 cents, plus all the other numbers listed: \n" ); document.write( "Your answer then is: \n" ); document.write( "5, 7, 10, 12, 14, 15, 17, 19, 20, 21, 22, and 24 and above. \n" ); document.write( " |