Bill has 30 coins, some nickels some dimes. They equal $2.10. How many nickels are there? What is the equasion used to solve this problem? When I solve it, I get 4.3 nickels, but how can there be .3? Please help me solve

I posted the two equations for this about an hour ago. Show your work and I'll find your error.

N + D = 30
5N + 10D = 210
Multiply the first by 5 and subtract from the second and you will have your answers.

  1. 👍 1
  2. 👎 0
  3. 👁 157
asked by mary
  1. n=5


    1. 👍 0
    2. 👎 1

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    Bill has 30 coins, some nickels some dimes. They equal $2.10. How many nickels are there? What is the equasion used to solve this problem? Let d=# dimes. let n=# nickels. d + n = 30 d($.10) + n($.05) = $2.10 Two equations and two

    asked by mary on December 17, 2006
  2. CSAB/Advance Algebra

    A handful of 65 coins consist of pennies, nickels and dimes. The number of nickels is 4 less than twice of pennies, and there are 13 more dimes than nickels. How many coins of each kind are there? Solve using Gauss-Jordan

    asked by Gray on January 19, 2016
  3. help! due tommorrow

    an assortment of coins contains 20 pennies, 2 nickels and 6 dimes what percentage of the coins are nickels? ( in the book the answer says 7% nickels) i want to know how to work out the problem

    asked by bbb444 on September 13, 2011
  4. math

    When a child breaks open her piggy bank, she finds a total of 76 coins, consisting of nickels, dimes, and quarters. The total value of the coins is $9. If the nickels were dimes, and the dimes were nickels, the value of the coins

    asked by suzz on February 16, 2015
  5. algebra

    No. 2 alyssa has some coins in her purse consisting of pennies, nickels and dimes. She has 2 more nickels than dimes and thrice as many pennies as nickels. If the total is 0.52 dollars how many coins of each kind does she have.

    asked by Chris on November 20, 2015
  6. math

    Jo has 37 coins (all nickels, dimes and quarters) worth $5.50. She has 4 more quarters than nickels. How many of each type of coins does she have? d=#dimes n=#nickels q=#quarters. ============== d+n+q=37 n+4=q 0.1d + 0.05n + 0.25q

    asked by Kt on January 1, 2007
  7. Algebra

    This is a word problem I am supposed to solve with systems. I am having trouble setting it up if anyone could help me. A coin bank contains only dimes and nickels. The bank contains 46 coins. If 5 dimes and 2 nickels were removed

    asked by emm on November 13, 2008
  8. Algebra 2

    Adding 1 to which digit will increase 736,419 by ten thousand? i think is 3... bill has four more dimes than nickels, and seven fewer nickels than pennies.he has a total of $3.35. how many of each kind of coin has he? bill has

    asked by Ron on November 1, 2006
  9. Math

    Cindy had $1.08 using 9 coins. She had as many pennies as dimes. ___ Danielle had 96 coins, using ten coins. She had the same number of nickels as all the other coins put together. __ The coin choices are. Half Dollar, Quarters,

    asked by Bob on May 21, 2008
  10. 8th gr. Algebra

    I have 3 math problems for homework that are stumping me. Can anyone help guide me? Thanks! Here they are: 1. A full bucket of water weighs eight kilograms. If the water weighs five times as much as the empty bucket, how much does

    asked by Kelsie on October 28, 2008

More Similar Questions