var Array = [
    [10, 5, 10],
    [50, 2, 10]
];

for (var k = 0; k < Array.length; k++)
{
    var totalCol = 0;
    $.each(Array[k], function (){totalCol += parseInt(this);});
    $('#table').append('<tr id="' + k + '"></tr>')
    for (var i = 0; i < Array[k][i]; i++)
    {
       var weight = Array[k][i];
       var width = weight * 100 / totalCol;
       $('#' + k).append('<td width="' + width + '%">column</td>');
       console.log(weight);
    }

}