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ErinWeeks

  • 3 years ago

Your piggy bank has a total of 46 coins in it; some are dimes and some are quarters. If you have a total of $7.00, how many quarters and how many dimes do you have? (2 points)

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  1. ErinWeeks
    • 3 years ago
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    HELP A SISTER OUT [:

  2. jarobins
    • 3 years ago
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    do I get 2 points for answering this?

  3. jarobins
    • 3 years ago
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    ha just kidding, I think this is a a algebraic substitution problem. Let me just work it out on some paper

  4. ErinWeeks
    • 3 years ago
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    Thank you jarobins your a big help (: !

  5. merchandize
    • 3 years ago
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    Let D be the number of dimes, Q be the number of quarters. Write an equation for the total number of coins. 1.D%2BQ=46 Write an equation for the total value of the coins. 2.10D%2B25Q=700 Multiply eq. 1 by -10 and add to eq. 2, -10D-10Q%2B10D%2B25Q=-460%2B700 15Q=240 Q=16 Then from eq. 1, D%2BQ=46 D%2B16=46 D=30 Thirty dimes and sixteen quarters.

  6. jarobins
    • 3 years ago
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    awe man. merchandise got me. But I think you got it wrong merch

  7. jarobins
    • 3 years ago
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    o nope, i double checked. Nice

  8. merchandize
    • 3 years ago
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    i think so its correct...check out

  9. ErinWeeks
    • 3 years ago
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    Nice , one question though whats up with the %?

  10. merchandize
    • 3 years ago
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    %2B=+ sign.... is it fine

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