function getGrade(score) {
let grade;
// Write your code here
if(score>25 && score<=30){
    grade="A";
}else if(score>20 && score<=25){
    grade="B";
}else if(score>15 && score<=20){
    grade="C";
}else if(score>10 && score<=15){
    grade="D";
}else if(score>5 && score<=10){
    grade="E";
}else{
    grade="F";
}

return grade;

}