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?
ANSWER THIS FAST , I WILL MARK YOU AS BRAINLIEST WITH EXPLANATION
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2- Sandra's score will be
=8×3+4×(-2)
=24+(-8)
=24-8
=16 answer
therefore sandra score 16 marks
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