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Aaron0620

  • 3 years ago

Your piggy bank has a total of 43 coins in it; some are dimes and some are nickels. If you have a total of $3.60, how many dimes do you have?

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  1. Mathhelp346
    • 3 years ago
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    so you know you have 43 coins. An equation for that would be n+d=43

  2. lgbasallote
    • 3 years ago
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    you take this one @Mathhelp346 ^_^

  3. Mathhelp346
    • 3 years ago
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    nvm the second equation should be 10d+5n=160

  4. Aaron0620
    • 3 years ago
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    26 x 17 =3.60 im close... 3.45

  5. Mathhelp346
    • 3 years ago
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    then you would solve for either d or n in the first equation. i'm going to do n. you would subtract d from both sides, leaving you with n=43-d

  6. Mathhelp346
    • 3 years ago
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    you would sub n into the second equation and solve

  7. Mathhelp346
    • 3 years ago
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    do you know what to do from here?

  8. Aaron0620
    • 3 years ago
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    29 dimes and 14 nickles.

  9. Mathhelp346
    • 3 years ago
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    i don't think that's right...

  10. Aaron0620
    • 3 years ago
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    right?

  11. Mathhelp346
    • 3 years ago
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    that would add up to 360. you need 160

  12. Aaron0620
    • 3 years ago
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    no the question is asking $3.60

  13. Mathhelp346
    • 3 years ago
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    oh my bad. your answer is right.

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