Question

in a class test 4 marks were awarded for every correct answer 2 marks are deducted for every incorrect answer and no marks are given for not attending question Ravi score 20 marks if he has got 8 correct answers how many questions has he attempted incorrectly​

Answer 1

Answer:

20=(8×4)-(x×2)

20=32-2x

x=32-20

x=12

questions has he attempted incorrectly is 6

Answer 2

Answer:

Step-by-step explanation:

no. of correct answers = 8

marks secured = 8 X 4 = 32

let the no. of incorrect answers be x

so the no. of marks cut = -2 X x = -2x

thus 32 - 2x = 20

32 - 20 = 2x

2x = 12

x = 12/2

x = 6

therefore ravi attempted 6 incorrect answers

hope this helps

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