Задача: логистика

function logistics(args) {
let countOfLoads = Number(args[0]);
let microbusTons = 0;
let truckTons = 0;
let trainTons = 0;
for(i = 1; i <= countOfLoads; i++) {
   let tons = Number(args[i]);
if(tons > 11) {
    trainTons += tons;

}else if(tons < 11 && tons > 3){
    truckTons += tons;
}else if(tons <= 3){
    microbusTons += tons;
}
sumOfTons = microbusTons + truckTons + trainTons;
}
console.log((((microbusTons * 200) + (trainTons * 120) + (truckTons * 175)) / sumOfTons).toFixed(2));
console.log((((microbusTons) / sumOfTons) * 100).toFixed(2) + "%");
console.log((((truckTons) / sumOfTons) * 100).toFixed(2) + "%");
console.log((((trainTons) / sumOfTons) * 100).toFixed(2) + "%");

}
logistics([4, 53, 7, 56, 999]);