Question
Adam scores a total of 30 marks.
There are a total of 70 questions.
Every correct answer will earn 3 marks.
Every wrong answer will earn 0 marks.
How many questions are (a) incorrectly answered and (b) correctly answered?
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Adam scores a total of 30 marks.
There are a total of 70 questions.
Every correct answer will earn 3 marks.
Every wrong answer will earn 0 marks.
How many questions are (a) incorrectly answered and (b) correctly answered?