function getGrade(score) {
    let grade;
    score <= 30 && score > 25 ? grade='A' : 
    score <= 25 && score > 20 ? grade='B' : 
    score <= 20 && score > 15 ? grade='C' :
    score <= 15 && score > 10 ? grade='D' :
    score <= 10 && score >  5 ? grade='E' :
    grade='F'
    
    return grade;
}

function getGrade(score) {
    let grade;
		
    // Write your code here
    let convertScoreToSingleDigits = Math.floor(Math.abs(score - 1) / 5);
		
    let reverseDigitOrder = Math.abs(convertScoreToSingleDigits - 5);
		
    let addToCharRange = reverseDigitOrder + 65;
		
    grade = String.fromCharCode(addToCharRange);
    
    return grade;
}

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

function getGrade(score) {
    let grade;
    if(score >= 0 && score <= 5) grade = 'F';
    else if(score > 5 && score <= 10) grade = 'E';
    else if(score > 10 && score <= 15) grade = 'D';
    else if(score > 15 && score <= 20) grade = 'C';
    else if(score > 20 && score <= 25) grade = 'B';
    else if(score > 25 && score <= 30) grade = 'A';
    return grade;
}