urgent math

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in a GIVEN DAY THE MILL TURNS OUT THREE TIMES AS MANY UNITS OF PLYWOOD. IT PROFITS OF $25 ON A UNIT OF LUMBER AND $40 ON A UNIT OF PLYWOOD. HOW MANY OF EACH M UST SELL TO MAKE PROFIT OF $14720 can anyone help im so confused

  • urgent math -

    read your first sentence, it is incomplete and makes no sense.
    Please re-type your question, and please don't use all-caps.

  • urgent math -

    a normal working day the mill makes 3 times as many units of plywood as they do lumber.profit of lumber is $25 profit of plywood is $40 how many of each must be sold to obtain a profit of $14790

  • urgent math -

    let the number of lumber units be x
    then the number of plywood units is 3x

    then 25x + 40(3x) = 14790

    solve for x

  • urgent math -

    so... i just pick any number

  • urgent math -

    no, you solve the equation
    ( why would you think to just pick any number ??)
    25x + 40(3x) = 14790
    25x + 120x = 14790
    145x = 14790
    divide by 145
    x = 102

    so they should make 102 units of lumber
    and 3(102) or 306 units of plywood.

    check 102(25) + 306(40) = 14790

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