Question

In a class test +3 marks are given for every correct answer and-2 for incorrect answer and no marks for attempting questions.
1. Radhika scored 20 marks if she has got 12 correct answers how Many questions she attempted incorrectly ​

Answer 1

Step-by-step explanation:

she aatmpted incorrectly Q=4

Answer 2

Answer:

8 questions she attemped wrong

Step-by-step explanation:

radhika's marks = 20

radhika attempted correct question = 12

marks for her correctly attempted questions= 12×3=36

let the marks of questions she attempted wrong be ×

then,,

36-x= 20

x = 36-20

= 16

no. of questions she attempted wrong = 16/2

= 8