Question

answer please

look in the picture ​

Answer 1

Answer:

1. 10

2. 20

Step-by-step explanation:

marks awarded for each correct answer = +3

marks awarded for each incorrect answer =  -1

1. no. of questions done right = 10

    points awarded = 10 *3 = 30

  let no. of questions done incorrect be x

   points awarded = x*-1= -x

A/Q  30 + (-x) = 20

        30-x = 20

          x=10

therefore no. of questions done wrong = 10

2. given that he has attempted all the questions

 10 = correct

10 = incorrect

total questions = 20  

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Answer 2

Answer:

(1)=10 (2) 20

Step-by-step explanation:

(1) 10 correct answer = 10×3=30 marks but Sona scored 20 marks

incorrect answer = 10 (-1for every incorrect answer)

(2) 10 correct answer+ 10 incorrect answer

total 20 questions were given in the test