Step-by-step explanation:
the value of x = 5 and the value of y = 4
Step 1: Find a number you can multiply by the bottom of the fraction to make it 10, or 100, or 1000, or any 1 followed by 0s.
Step 2: Multiply both top and bottom by that number.
Step-by-step explanation:
7
If the exam is worth (only!) 15%, then the class average is worth (100-15)=85%.
The grade will then be 54*0.85+0*0.15= 45.9%
The letter grades (if any) will vary from school to school.