Question

yash scored 40 marks in a test, getting 3 marks for each right answer and loosing 1 Marks for each wrong answer. had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer, then yash would have scored 50 marks. how many questions were there in the test?​

Answer 1

Answer:

Here is your answer:

Step-by-step explanation:

Let the number of right answers and wrong answers be x and y

respectively.

According to the given information,

3x – y = 40 (1)

4x – 2y = 50

(2)

Subtracting equation (2) from equation (1), we obtain

x = 15 (3)

Substituting this in equation (2), we obtain

30 – y = 25

y = 5

Therefore, number of right answers = 15

And number of wrong answers = 5

Total number of questions = 20

Hope this may helpful to you.

Thank you..

Answer 2

Answer:

$\huge{\mathcal{\underline{\green{Answer}}}}$

Let x be the number of right answers and y be the number of wrong answers.

∴ According to the question ,

3x−y=40⟶(i)

and , 2x−y=25⟶(ii)

On substraction : x=15

putting the value of x in ⟶(i)

3(15)−y=40

y=5

∴ Number of right answers=15 answers

Number of wrong answers=5 answers.

Total Number of questions 5+15=20