Question

15. In an examination a student got 80 marks and in the next examination he got 75 marks. How much
percentage of marks decreased?
(1 Point)
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Answer 1

please elaborate the question ( whether he got out of 100 or 80)

Answer 2

Answer:

If the total marks are 100,

Then it will be 5%

Step-by-step explanation:

To calculate percentage decrease:

Work out the defference (decrease) between the two numbers you are comparing..

Then divide the decrease by the original number and multiple the answer by 100..

Our calculation:

80-75=5

at next:

5/100*100=5 (If the total marks are 100)

Answer:5% marks decreased..