Question

In a class test containing 10 questions, 5 marks are awarded for every correct answer and (−2) marks are awarded for every incorrect answer and 0 for each question not attempted.
(i) Ravi gets 4 correct and 6 incorrect answers. What is his score?
(ii) Reenu gets 5 correct and 5 incorrect answers. What is her score? (iii) Heena gets 2 correct and 5 incorrect answers. What is her score?

Answer 1

Answer:

in a test (+5) marks are given for every correct answer and (-2) marks are given for every

Incorrect answer and 0 for answer not attempted. Ram gets 3 correct and 4 incorrect out of 7 questions

He attempted. What is his score?

Step-by-step explanation:

(i) 8

(ii) 15

(III) 0

Answer 2

$\huge\mathfrak{Bonjour!}$

$\huge\fcolorbox{black}{teal}{Solution:-}$

✏️ Answer:-

★ (i) Ravi's score - 8 marks.

(ii) Reenu's score - 15 marks. And,

(iii) Heena's score - 0 marks.

✏️ Step-by-step explanation:-

★ Given- In a class test containing 10 questions, 5 marks are awarded for every correct answer and (−2) for each wrong and 0 for not attempted questions. We will just forget unattempted questions as it will give her 0 marks.

So let us say for any student who gave x right questions and y wrong questions then total marks is given as 5x+(−2)y i.e

→ 5x−2y total marks.

Now,

i) Ravi gets 4 correct and 6 incorrect so total score 5×4−2×6 i.e 8 marks.

ii) Reenu gets 5 correct anf 5 incorrect do total marks scored is equal to

5×5−2×5 i.e 15 marks.

iii) Heena gets 2 correct and 5 incorrect. She attempts only 7 questions so for the remaining 3 questions she will score zero marks.

So total marks scored by Heena is 5×2−5×2+0 i.e 0 marks.

________________________________________

I hope this helps! :)