Sum Seconds

        function solve(arr) {
            var x = Number(arr[0]);
            var y = Number(arr[1]);
            var z = Number(arr[2]);
            var totalSeconds = x + y + z;
//            console.log(totalSeconds);
            var hours = Math.floor(totalSeconds / 60);
//            console.log(hours);
            var seconds = totalSeconds - hours * 60;
//            console.log(seconds);

            var result = "";
            if (seconds < 10) {
                seconds = "0" + seconds;
            }

            if (totalSeconds >= 0 && totalSeconds <= 59) {
                result = "0:" + seconds;
                console.log(result);
            }
            else if (totalSeconds >= 60 && totalSeconds <= 119) {
                result = "1:" + seconds;
                console.log(result);
            }
            else if (totalSeconds >= 120 && totalSeconds <= 179) {
                result = "2:" + seconds;
                console.log(result);
            }

        }