Question

hey this is very necessary please give me rhe answwr​

Answer 1

Answer:

Total questions=180

Step-by-step explanation:

Marks awarded for each correct answer = 1

Marks deducted for each wrong answer = 0.5

Let total number of correct answers = x

Let total number of wrong answers = y

And x+y = Total number of questions

Then original marks = x - 0.5y

and new marks = 0.5x - y

According to question : 0.5x - y = (x - 0.5y) - 90

0.5x + 0.5y = 90

x+y = 180

So, Total number of questions = 180

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