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

Given:-

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀According to the Question

It is given that in class test 4 marks were awarded for every correct answer , 2 marks were deducted for every incorrect answer & No marks were given for not attempting question .

No. of Marks Scored by Ravi = 20

No. of Correct answer given by him = 6

We have to calculate the No. of Question has he attempted incorrectly ? So, Let's Start

$:\implies$ Actual marks obtained by Ravi in giving correct answer = 12 × 3 = 36

But marks obtained by him = 20

Therefore,

→ marks cut in attempting incorrect Question = 36- 20

→ marks cut in attempting incorrect Question = -16

And , also the marks deducted for each incorrect answer is -2 . So ,

$:\implies$ The number of incorrect answer given by him = -16/-2

$:\implies$ The number of incorrect answer given by him = 16/2

$:\implies$ The number of incorrect answer given by him = 8

• So , the number of questions he has attempted incorrectly was 8 .

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?

To Find:-

• Find how many questions has he attempted correctly.

Solution:-

First ,

We have to find the actual marks obtained by Ravi:-

$\dashrightarrow\sf \: Correct \: answers \times Marks \: given \: to \: each \: question$

$\dashrightarrow\sf \: 8 \times 4$

$\dashrightarrow\sf \: 32$

Now ,

We have to find the marks removed from his marks to get the negative marks got to him:-

$\dashrightarrow\sf \: 32 - 20$

$\dashrightarrow\sf \: 12$

Now ,

We have to find number of incorrect answers he attempted:-

$\dashrightarrow\sf \: \dfrac { 12 } { 2 }$

$\dashrightarrow\sf \: 6$

• Questions has he attempted incorrectly by Ravi is 6