Question

There are 90 multiple choice questions in a test. Suppose you get 2 marks for every correct
answers and for every question you leave attempted or answer wrongly, one mark is
deducted from your total score of correct answers. If you get 60 marks in the test, then how
many questions did you answer correctly?

with the steps

if done I will follow you ​

Answer 1

Answer:

50 questions

Step-by-step explanation:

Given :

• No. of multiple choice questions = 90

• 2 marks obtained for every correct answers

• 1 mark deducted for wrong answer

• Mark obtained = 60 marks

Solution:

Let, correct answered questions = x

Incorrect answered question = 90 - x = -90 + x

Marked obtained for correct answers  = 2x

Marks deducted for wrong answers  = -1 (90-x)

⇒ 2x - 90 + x = 60

⇒ 3x = 60 + 90

⇒ 3x = 150

⇒ x = 150 / 3

⇒ x = 50

Therefore,

50 questions