Javascript - Project 1 :Marks with Grade

        let tamil = 50;
        let english = 55;
        let maths = 50;
        let science = 50;
        let socialScience = 50;

        function add() {
            let total = tamil + english + maths + science + socialScience;
            return total;

        }
        let total = add();
        console.log(total);

        function avg(total) {
            return total / 5;
        }
        let average = avg(total);
        console.log(average);

        function grade(avrg) {
            if (avrg >= 90) {
                console.log("A");
            }
            else if (avrg >= 70) {
                console.log("B");
            }
            else if (avrg >= 50) {
                console.log("E");
            }
            else {
                console.log("Failed")
            }
        }
        grade(average);

Output :

255
51
E