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Phil has 20 coins, nickels,dimes, and quarters, totaling $2.30. If he has twice as many nickels as quarters, how many quarters does Phil have?

  • math -

    Putting each piece of information into symbols, we have

    n+d+q = 20
    n = 2q
    5n+10d+25q = 230

    So, what do you get?

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