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 attempting question. Ravi scored 20 marks. If he has got
8 correct answers, how many questions has he attempted incorrectly?​

Answer 1

Answer:

marks got for 8 correct answer =8×4 = 32

marks scored=20

marks left= 12

2 marks deducted for 1 question

12 marks deducted for= 12/2=6

HE ATTEMPTED 6 QUESTIONS INCORRECTLY

Answer 2

⠀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 attempting question. Ravi scored 20 marks. If he has got 8 correct answers, how many questions has he attempted incorrectly?

Stated -

• Total scores he hits is 20 Mark's
• He got 8 answers as correct
• 4 Mark's were awarded for correct answer
• 2 Mark's deducted for every Incorrect ans
• No points will be given for not attempting

To Find -

• How many questions he attempted incorrectly

Solution -

⠀In the Question; It is concluded that ravi hits total 20 Marks in the class test and 4 marks are rewarded for every correct answer. If he gets wrong answer then his 2 marks will be deducted from the test. No marks will be given for skipped question, He got 8 answers as correct: So, How many answers he has given wrong? Let's find out..

$\:\:\:\:\:\:\twoheadrightarrow$ No. of correct answer = 8

$\:\:\:\:\:\:\twoheadrightarrow$ For correct answers = 8(4) = 32

$\:\:\:\:\:\:\twoheadrightarrow$ His total score = 20

Now -

⠀— We have the required marks that he secured in his class test that is 32. But.. Now we have to find the no. of answers that he hit incorrectly

⠀— Let the no. of incorrect answer be x

As, 2 Mark's will be taken away for Incorrect answer.. So, It should be 2x.

So, for incorrect answers = 32 – 20 = 12

$\longrightarrow\sf{\: 2x = 12}$

$\longrightarrow\sf{\: x = \dfrac{12}{2}}$

$\longrightarrow\underline{\sf{\red{\: x = 6}}}$

Final Answer -

⠀⠀⠀— Hence, He scored total 32 marks and he got 6 answer as incorrect in his class test

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