Complete the Learner class's getAverage() method so it returns the average of the three marks, then print the learner's name and average.
Input / Output
Input: line 1 is the learner's name, line 2 has three space-separated integer marks. Output: "name: average" with the average to 1 decimal place.
Examples
Input
Thabo 70 80 76
Expected Output
Thabo: 75.3
Input
Aisha 90 90 90
Expected Output
Aisha: 90.0
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