Answer:
• score with two questions wrong = 18
• score with x questions wrong = (20 - x)
Explanation:
The question is divided into two parts.
The first part asks us to calculate the marks that would be scored out of 20 if someone got 2 questions wrong. To do this we simply have to subtract 2 from 20 to get the score:
score = 20 - 2
= 18
Therefore, Yasmin's score would be 18.
The second part asks us to calculate the marks that would be scored if someone got x questions wrong instead. As we did in the first part, we have to take away x from 20 in order to get the score:
score = 20 - x,
where x can be any whole number.
Therefore, Yasmin's score would be (20-x).