Question

In a competitive test 180 multiple choice questions were given. A candidate gets 4 marks for each correct answer and for every un attempted or wrongly answered question one mark is deducted from the total score of correct answers. If a candidate scored 450 marks in the test ii) How many questions did he answer wrongly?

Answer 1

Step-by-step explanation:

first let us find total number of questions he answered correctly

so, let the no. of questions he answered be x

now, 450=4x+x-180

450=5x-180

5x=450+180

5x=630

x=630/5

x=126

Now, let us find total questions he answered wrongly

so, total no. of questions - total no. of questions he answered correctly

= 180-126

=54

hence, 54 questions he answered wrongly.