12.17 Prog Assignment 3 - 3: Letter Grade
In this program, you need to find the average letter grade. It calculate three student scores and then, converts the numerical average into a letter grade A-F.

The letter grade scale as follow:

90 - 100 > A
80 - 89.99 --> B
70 - 79.99 --> C
60 - 69.99 --> D
0 - 59.99 --> F
To complete the program, follow the steps:

(1) Prompt the user to input 3 student scores, then output them. (from 0 - 100). Note, the format of the scores, use %0.2f.(Submit for 2 points)

Enter the 1st score:
92.5
Enter the 2nd score:
87.3
Enter the 3rd score:
83.4
The scores entered are: 92.50, 87.30 and 83.40
(2) Extend the program to output the average of the 3 scores entered in step 1. Note, use %0.2f for the format of the average. (Submit for 3 points, so 5 points total)

Enter the 1st score:
92.5
Enter the 2nd score:
87.3
Enter the 3rd score:
83.4
The scores entered are: 92.50, 87.30 and 83.40
The average score is: 87.73
(3) Extend again to output the letter grade based on the result in step 2. Hint: use if statement (Submit for 5 points, so 10 points total)

Enter the 1st score:
92.5
Enter the 2nd score:
87.3
Enter the 3rd score:
83.4
The scores entered are: 92.50, 87.30 and 83.40
The average score is: 87.73
Your grade is B
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I need to use python to program this can someone help