Answer: Her percent score = 82%.
Step-by-step explanation:
Given : Correct questions =21
Total questions = 25
Let there is 1 marks for each correct question.
Maximum marks on the test= 25
Marks scored = 21
Now, the percentage of marks scored = [tex]\dfrac{\text{Marks scored}}{\text{Total marks}}\times100[/tex]
[tex]=\dfrac{21}{25}\times100\%=21\times4\%=82\%[/tex]
Hence, Her percent score = 82%.