[Solved] WonderWorks Magic Show with Java

WonderWorks Magic Show: The Magic Castle, the home of the Academy of Magical Arts at California has organized the great ‘WonderWorks Magic Show’. 3 renowned magicians were invited to mystify and thrill the crowd with their world’s spectacular magic tricks. At the end of each of the 3 magicians’ shows, the audience were requested to give their feedback in a scale of 1 to 10. Number of people who watched each show and the average feedback rating of each show is known. Write a program to find the average feedback rating of the WonderWorks Magic show.

Input Format:
First line of the input is an integer value that corresponds to the number of people who watched show 1.
Second line of the input is a float value that corresponds to the average rating of show 1.
Third line of the input is an integer value that corresponds to the number of people who watched show 2.
Fourth line of the input is a float value that corresponds to the average rating of show 2.
Fifth line of the input is an integer value that corresponds to the number of people who watched show 3.
Sixth line of the input is a float value that corresponds to the average rating of show 3.

Output Format:
Output should display the overall average rating for the show. Display the rating correct to 2 decimal places.
Refer sample input and output for formatting specifications.
[All text in bold corresponds to input and rest corresponds to output.]

Sample Input and Output:
Enter the number of people who watched show 1
400
Enter the average rating for show 1
9.8
Enter the number of people who watched show 2
500
Enter the average rating for show 2
9.6
Enter the number of people who watched show 3
100
Enter the average rating for show 3
5
The overall average rating for the show is 9.22

Solution

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n1 = sc.nextInt();
        float r1 = sc.nextFloat();
        int n2 = sc.nextInt();
        float r2 = sc.nextFloat();
        int n3 = sc.nextInt();
        float r3 = sc.nextFloat();
        System.out.printf("%.2f", (n1 * r1 + n2 * r2 + n3 * r3) / (n1 + n2 + n3));
    }
}

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