Question

in a class test + 3 marks are given for every correct answer and minus 2 mark are given for every incorrect answer and no marks are given for not written attempt any question



Q1. Radhika scored 20 marks if she has got 12 correct answers how many questions has she attempted incorrectly



Q2. Mohini scores - 5 marks in this test through she has got 7 correct answers how many questions has she attended incorrectly

Answer 1

Heya

1 answer

Let the number of wrong answers be y

3(12) - 2y = 20

36 -2y = 20

-2y = 20-36

-2y = -16

y = 8

Radhika has attempted 8 questions wrong.

2 answer

Let the number of incorrect answers be y

7(3) - 2y = -5

21 -2y = -5

-2y = -26

y = 13

Mohini has attempted 13 questions wrong.

Hope.it helps