document.write( "Question 152564: how many ways to make change for one dollar using nickels, dimes and quarters \n" ); document.write( "
Algebra.Com's Answer #112175 by Edwin McCravy(20060)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "We can use either 0, 1, 2, 3, or 4 quarters.\r\n" ); document.write( "\r\n" ); document.write( "If we use 0 quarters, we can use from 0 up to 10 dimes,\r\n" ); document.write( "and the rest, if any, in nickels. That accounts for 11 ways.\r\n" ); document.write( "\r\n" ); document.write( "If we use 1 quarter, we can use from 0 up to 7 dimes,\r\n" ); document.write( "and the rest in nickels. That accounts for 8 ways.\r\n" ); document.write( "\r\n" ); document.write( "If we use 2 quarters, we can use from 0 up to 5 dimes,\r\n" ); document.write( "and the rest, if any, in nickels. That accounts for 6 ways.\r\n" ); document.write( "\r\n" ); document.write( "If we use 3 quarters, we can use from 0 up to 2 dimes,\r\n" ); document.write( "and the rest in nickels. That accounts for 3 ways. \r\n" ); document.write( "\r\n" ); document.write( "If we use 4 quarters, that's the whole dollar, so that accounts\r\n" ); document.write( "for 1 way.\r\n" ); document.write( "\r\n" ); document.write( "So the total number of ways = 11+8+6+3+1 = 29 \r\n" ); document.write( "\r\n" ); document.write( "You weren't asked to list them, but here is the \r\n" ); document.write( "list of all 29 ways: \r\n" ); document.write( "\r\n" ); document.write( " 1. 0 quarters, 0 dimes, and 20 nickels.\r\n" ); document.write( " 2. 0 quarters, 1 dime, and 18 nickels.\r\n" ); document.write( " 3. 0 quarters, 2 dimes, and 16 nickels.\r\n" ); document.write( " 4. 0 quarters, 3 dimes, and 14 nickels.\r\n" ); document.write( " 5. 0 quarters, 4 dimes, and 12 nickels.\r\n" ); document.write( " 6. 0 quarters, 5 dimes, and 10 nickels.\r\n" ); document.write( " 7. 0 quarters, 6 dimes, and 8 nickels.\r\n" ); document.write( " 8. 0 quarters, 7 dimes, and 6 nickels.\r\n" ); document.write( " 9. 0 quarters, 8 dimes, and 4 nickels.\r\n" ); document.write( "10. 0 quarters, 9 dimes, and 2 nickels.\r\n" ); document.write( "11. 0 quarters, 10 dimes, and 0 nickels.\r\n" ); document.write( "12. 1 quarter, 0 dimes, and 15 nickels.\r\n" ); document.write( "13. 1 quarter, 1 dime, and 13 nickels.\r\n" ); document.write( "14. 1 quarter, 2 dimes, and 11 nickels.\r\n" ); document.write( "15. 1 quarter, 3 dimes, and 9 nickels.\r\n" ); document.write( "16. 1 quarter, 4 dimes, and 7 nickels.\r\n" ); document.write( "17. 1 quarter, 5 dimes, and 5 nickels.\r\n" ); document.write( "18. 1 quarter, 6 dimes, and 3 nickels.\r\n" ); document.write( "19. 1 quarter, 7 dimes, and 1 nickel.\r\n" ); document.write( "20. 2 quarters, 0 dimes, and 10 nickels.\r\n" ); document.write( "21. 2 quarters, 1 dime, and 8 nickels.\r\n" ); document.write( "22. 2 quarters, 2 dimes, and 6 nickels.\r\n" ); document.write( "23. 2 quarters, 3 dimes, and 4 nickels.\r\n" ); document.write( "24. 2 quarters, 4 dimes, and 2 nickels.\r\n" ); document.write( "25. 2 quarters, 5 dimes, and 0 nickels.\r\n" ); document.write( "26. 3 quarters, 0 dimes, and 5 nickels.\r\n" ); document.write( "27. 3 quarters, 1 dime, and 3 nickels.\r\n" ); document.write( "28. 3 quarters, 2 dimes, and 1 nickel.\r\n" ); document.write( "29. 4 quarters, 0 dimes, and 0 nickels.\r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |