Question

In an examination 4 marks are assigned for correct answer and 1 mark is deducted for wrong answer. However one student attempted all 60 questions and scored 130.Number of questions he attempted correct is?

Answer 1

Answer:

Step-by-step explanation :

Let's the number of questions correctly answered is X.

Then ; the number of questions whose answers are incorrect = 60-X

X*4 - (60-X)*1 =130

4X - 60 + X = 130

5X = 190

X = 190/5

X = 38