algebra

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nicole has $2.20 in nickels and quarters. she has 16 coins all together. how many of each does she have?

chris has $3.20 in dimes and quarters. he has 17 all together. how many of each does he have?

  • algebra -

    It's not necessary to change names on this forum. It's obvious that these four questions were posted by one person.

  • algebra -

    yeah i know i didn't think you would answer all of thes questions. can you help me w/ at least 2 please. i need to know the steps then i can do the other problems

  • algebra -

    Your last four money questions are the same type
    If will do one, then you try the others.

    let the number of nickels be x
    then the number of quarters is 16-x

    5x + 25(16-x) = 220
    5x + 400 - 25x = 220
    -20x = -180
    x = 9

    so 9 nickels and 7 quarters

    check: 9 nickels and 7 quarters = 16 coins
    value: 9x5 = 7x25 = 220

  • algebra -

    where is the 25 and 5x from?

  • algebra -

    25 = 25 cents = 1 quarter
    5 = 5 cents = 1 nickel

  • algebra -

    PAM AND PAT HAVE $20 ALTOGETHER PAM HAS $4 MORE THAN PAT HOW MUCH MONEY DOES PAM HAS$

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