Logistics

function number(inputData){
    var n = Number(inputData[0]);

    var countTotal = 0;
    var countVan   = 0;
    var countTrack = 0;
    var countTrain = 0;

    for(var i = 1; i <= n; i++) {
       var num = Number(inputData[i]);
           countTotal += num;
           if (num <= 3){
                countVan += num;
           } else if (num <= 11){
                countTrack += num;
           } else {
                countTrain += num;
           }
        }
       var midPrice = (countVan * 200 + countTrack * 175 + countTrain * 120 ) / countTotal;
       console.log((midPrice).toFixed(2));

       countVan = (countVan / countTotal * 100).toFixed(2);
       countTrack = (countTrack / countTotal * 100).toFixed(2);
       countTrain = (countTrain / countTotal * 100).toFixed(2);

   console.log(`${countVan}%`);
   console.log(`${countTrack}%`);
   console.log(`${countTrain}%`);
}
//  number(["5", "2", "10", "20", "1", "7"])

//      149.38
//      7.50%
//      42.50%
//      50.00%