Question

In a competitive exam of 40 question, +3 is awarded
for a correct and -1 for every woung answers
Find the total score if a student had 11 wrong answers in his attempts of all questions

Please write the explanation also​

Answer 1

QUESTION :-

In a competitive exam of 40 question, +3 is awarded

for a correct and -1 for every woung answers

Find the total score if a student had 11 wrong answers in his attempts of all questions.

Give explaination!

SOLUTION:-

Total number of marks in exam :- 40x3

=> 120 marks.

Total negatives He attempted = -11

and total correct questions = 40-11

questions

So, correct marks he got = 29x3

=> 87 marks

So, his total score after attending all question is =87

But,

due to negative of 11 it becomes,

=> 87-11= 76

Total marks =76 and out of 120

His score is = 76/120

Ans.

Answer 2

he attempts 40 questions

and he gave 11 wrong answers

so

$40 - 11 = 29$

therefore 29 correct answers

marks he got for correct answers=

$29 \times 3 = 87$

marks for 11 wrong answers =

$11 \times - 1 = - 11$

threrefore let us add these marks to obtain his total marks=

$87 + ( - 11) \\ = 87 - 11 \\ = 76$

therefore he scored 76 marks out of 120 marks

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