Judith scores 30% in a test and after review, even though her score is
increased by 20%, she fails by 8 marks. In her post review score is increased by
25% she will have 14.5 marks more than the passing score. The percentage
score needed for passing the examination.
Answers
Answer:
Sorry... Don't know ... not good at math
please mark me as brainliest
The answer is 39.2%
GIVEN
Judith scores 30% in a test and after review, even though her score is increased by 20%, she fails by 8 marks. In her post review score is increased by 25% she will have 14.5 marks more than the passing score.
TO FIND
The percentage score needed for passing the examination.
SOLUTION
We can simply solve the above problem as follows;
Let the maximum marks of the test = 100x
Judith's score = 30% of 100x = 30x
Judith's marks after review = 30x + 20% of 30x = 30x + 6x = 36x
With 36x she fails by 8 marks
So,
Passing marks = 36x + 8 (Equation 1)
Judith's score after post review = 36x + 25% of 36x = 36x + 9x =45x
Now,
Passing score = 45x - 14.5 (equation 2)
From equations 1 and 2
36x + 8 = 45x - 14.5
45x - 36x = 8 + 14.5
9x = 22.5
x = 2.5
Maximum marks = 100 × 2.5 = 250
Passing marks = 36x + 8 = 98
Percentage of passing marks =
= 39.2%
Hence, The answer is 39.2%
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