Question

In atest +3 marks are given for every correct answer and-1 mark is given for every incorrect answer .Sona attempted all the questions and scored +20marks though she got 10 correct answers . A ) How many incorrect answers had she attempted? B)How many questions were there?​

Answer 1

Answer:

correct marks=+3

incorrect mark=-1

total mark scorced by Sona=+20

correct answer,=10

A)10 multipled with 3=30-20=10

so she got 10 incorrect answers

B)20+10=30

hence,there are 30 question

Answer 2

Answer:

a) 10 wrong answers

b) 20 Questions

Step-by-step explanation:

A) Marks she got for correct answers = 3 x 10

                                                                = 30 marks

    Marks she got in total = 20 marks

    Marks she lost for incorect answers = 30 - 20

                                                                 = 10 marks

     No of incorrect answers = 10/1

                                              = 10 wrong answers

B) Total no of Questions = Wrong answers + Correct answers

                                         = 10+10

                                         = 20 Questions

Pls mark this answer as the brainliest.