Question

Solve the question:

One student got 45 marks while attempting 23 answers in a exam. For the each right answer of these questions he got 3 masks and for the wrong answer 1 mark was dismissed. Then identify how many questions were wrong?

A) 4
B) 6
C) 3
D) 9​

Answer 1

Step-by-step explanation:

Student attempted 23 questions and each question carry 3 marks.

Student secured 45 marks

So, 3 × 15 = 45

So, total correct answer is 15.

1 marks deducted for wrong answer

So, 23 - 15 = 8

So, total 8 answers is wrong.

Answer 2

Step-by-step explanation:

Student secure 45 marks,so

3*15=45

So, Total correct answer is 15

1 mark is deducted for each wrong answer,

So,

23-15 =8