math

posted by .

Six hundred pennies are placed in a row. If every other penny is replaced by a nickel and every third coin is replaced by a quarter, what is the final value of the 600 coins?

  • math -

    600 pennies = $6.00
    after replacement by a nickel, there are 300 pennies and 300 nickels.
    Value = 300*0.01 + 300*0.05 = $18.00

    Finally, the replacement by quarters every third coin means that one-third of the nickels and one-third of the pennies will be replaced by quarters.
    Think of the replacement process: the first one encountered is a penny, the next one is a nickel, the third one is a penny, .....


    In the end, there will be
    200 pennies,
    200 nickels, and
    200 quarters.

    Total value = 200(0.01+0.05+0.25)=$62.00

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    HELP HELP I need to work this questions. Six hundred pennies are placed in a row. If every other penny is replaced by a nickel and every third coin us replaced by a quarter, what is the final value of the 600 coins?
  2. math

    A box contains 4 coins: a penny, a nickel, a dime, and a quarter. It costs a dime to reach in and take a coin. What is the expected value of this game?
  3. Math

    A coin purse contains 10 pennies, 5 nickels, 3 dimes, and 2 quarters. Two coins are selected without the first one being replaced. Find P(quarter, then nickel).
  4. math

    Eight pennies are placed in a row on a tabletop. Every other coin is then replaced with a nickel. Every third coin is then replaced with a dime. finally, every fourth coin is replaced with a quarter. what is vaule of the eight coins …
  5. MATH

    24 1c coins are set out in a row on a table. Then every 2nd coin is replaced by a 2c coin every 3rd coin is replaced by a 5c coin every 4th coin is replaced by a 10c coin every 5th coin is replaced by a 20c coin every 6th coin is replaced …
  6. Algebra 2

    You have 10 coins..3 quarters,5 dimes, and 2 nickels. a. A coin is selected and then replaced. A second coin is selected and then replaced. A third coin is selected and then replaced. Find the probability that all 3 coins were dimes.
  7. Math

    Suppose there are 500 pennies in a row... (math problem)?
  8. MATHS

    24 1c coins are set out in a row on a table Then every 2nd coin is replaced by a 2c coin every 3rd coin is replaced by a 5c coin every 4th coin is replaced by a 10c coin every 5th coin is replaced by a 20c coin every 6th coin is replaced …
  9. ALGEBRA

    Mae open her coin purse and found pennies,nickels and dimes with a total value of $2.85.If there are twice as many pennies as there are nickels and dimes combined.How many pennies,dimes and nickels are there if she has a collection …
  10. Math

    I have 3 nickels, 1 quarter, and 1 penny in my pocket. If I pick out a coin from my pocket, do not replace it, then pick out a second coin from my pocket, what is the probability that the second coin that I pick out of my pocket is …

More Similar Questions