Answer:
Step-by-step explanation:
a) Out of 5, 1 only one is wrong. So number of questions answered correctly is (4/5)
To find the percentage, multiply (4/5) by 100
[tex]\sf \dfrac{4}{5}*100 = 4* 20 = 80 \%[/tex]
b) It is not possible to find the actual score because we don't know how many questions were there actually and the score for each question.
