Question

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

Answer 1

open the image first and check the answer ya this is the correct answer

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