Question

10. In a test, +3 marks are given foe every correct answer and -2 mark are given for every incorrect answer.
i) Sona scored +15 marks though she got 7 correct answers. How many incorrect answers has she attempted?
ii) Sandra answered 8 correct and 4 incorrectly. What’s her score?
I WILL MARK YOU AS BRAINLIST

Answer 1

Answer:

7*15= 105

105-15= 90

90/15=6

8*3=24

4*--2=-8

24-8=16