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math

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joe had four times as many dimes as pennies in her pocket. she spent two dimes and got two pennies in change. Now she has three times as many dimes as pennies. jo started with how many dimes?

  • math - ,

    d=4P
    (d-2)=3(P+2)

    that should do it, two equations, two unknowns. Put them in standard form..

    d-4P=0
    d-3P=8

    solve for d, P

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