Average Speed

                             Average Speed

A single line L with a set of space separated values indicating distance travelled and time taken is passed as the input. The program must calculate the average speed S (with precision upto 2 decimal places) and print S as the output.

Note: The distance and time taken will follow the format DISTANCE@TIMETAKEN. DISTANCE will be in kilometers and TIMETAKEN will be in hours.

Input Format:
The first line contains L.

Output Format:
The first line contains the average speed S.

Boundary Conditions:
Length of L will be from 3 to 100.

Example Input/Output 1:
Input:
60@2 120@3

Output:
36.00 kmph

Explanation:
Total distance = 60+120 = 180 km.
Total time taken = 2+3 = 5 hours.
Hence average speed = 180/5 = 36.00 kmph

Code:

import java.util.*;

public class Hello {

    public static void main(String[] args) {

                   Scanner sc=new Scanner(System.in);

                   String str=sc.nextLine();

                   String[] ch=str.split(" ");

                   float d=0,t=0;

                   for(String s:ch)

                   {

                       String[] data=s.split("@");

                       d+=Integer.parseInt(data[0]);

                       t+=Integer.parseInt(data[1]);

                   }

        System.out.printf("%.2f kmph",d/t);

          }

}

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