Answer:
10 incorrect answers
Step-by-step explanation:
Correct answer = +3
Incorrect answer = - 1
Mark scored = 20
Number of correct answers = 10
Let:
Incorrect answers = y
Hence, we can fashion out the expression for total score :
(Number of correct answers * score per Correct answer + number of incorrect * score per incorrect) = total score
(10 * 3) + (y * - 1) = 20
30 - y = 20
-y = 20 - 30
-y = - 10
y = 10
10 incorrect answers
Answer:
I think it's 19.21, but in your case it would be 19.2. Sorry if I'm wrong
Answer:
there is the answers❤ sorry its a little blurry
answer: the answer is the first answer choice