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find the worlds production of nickel in a year when russia and new caledonia together produced 1/3 of it,canada 1/6 of it,and australia 1/9 of it, and the rest of the world 420,000 tons

  • math - ,

    rest of world=420000
    (1-1/3-1/6- 1/9)W=420 000
    (9-3-2-1)/9 * W=420 000
    solve for W, worlds production of nickel

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