algebra

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Militsa has 4 times as many nickels as dimes. Their total value is $8.10. How many of each coin does she have

  • algebra -

    Let N be the number of nickels and D be the number of dimes. Here is what you know:

    N = 4D
    10D + 5N = 810
    -----------------
    Now substitute 4D for N

    10D + 20D = 810

    30D = 810
    You take it from there

  • algebra -

    30D=810 check
    =D=810/30 108*.05+27*.1=8.1
    =D=27 5.4+2.7=8.1
    8.1=8.1
    x=y*4
    x=27*4
    x=108

    y=27

  • algebra -

    85

  • algebra -

    jk idk how

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