Question

In an examination, for every correct answer, the
student gets 3 marks and for every incorrect
answer, the student loses 1 mark. If Pranjal
attempts 50 questions and scores 106 marks, find
the number of questions she attempted correctly.​

Answer 1

Step-by-step explanation:

let the no. of questions she attempted correctly =x ,then

no. of questions she attempted incorrectly=(50-x)

A/Q,

Total marks scored=3*x + (-1)*(50-x)

106 =3x-50+x

106=4x-50

4x=106+50

4x=156

x=156/4

x=39

Therefore,no. of questions she attempted correctly is 39