. Yash scored 40 marks in a test getting 3 marks


marks for each right answer and losing 1 mark 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?

 

Best Answer

Explanation:

Suppose 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 subtraction :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.

Final Answer:

Hence, 20 questions were there in the test.

 

 

Talk to Our counsellor