Question

Please answer 3 and 4​

Answer 1

Answer:

I solve this question with myself not paste from internet so please drop some thanks.

[ 3.] Mark on correct answer is

=> ( 80 × 1 ) = 80

Guessing question or wrong question

=> 120 - 80 = 40 question

Mark deducted on wrong answer

=> 1/4 × 40 = 10

then, total marks :-

=> 80 - 10 = 70

[ 4.] Let the student gives answer correctly be x.

Marks on correct answer = (x × 1 ) = x

then, student gives wrong answer be (120 - x).

Marks deducted on wrong answer

=> 1/4 (120 - x) = 30 - x/4

thus, total marks :-

=> x - (30 - x/4) = 95

=> x - 30 + x/4 = 95

=> x + x/4 = 95 + 30

=> (4x + x) /4 = 125

=> 5x/4 = 125

=> 5x = 125 × 4

=> 5x = 500

=> x = 500/5

=> x = 100

Hence, correct answers given by student = x = 100

Answer 2

Answer:

3) is correct answer

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