Question

In a class (+3) marks are given for correct answer and ( -2) marks are given for every incorrect answer and no marks for not attempting any question. Radhika scored 20 marks. If she got 12 correct answers, how many questions has she attempted incorrectly

Answer 1

Answer:

8 incorrect answer were attempted

Step-by-step explanation:

1 correct ans=3marks

marks scored = 20

1 incorrect answer = -2 marks

ans attempted = 12

marks  obtained for correct ans=12*3=36

incorrect ans = 36-20=16

                      =16/2

                      = 8