Question

in a competative exam there are 60 question. The correct answer would Carry 2 mark and incorrect would subtract 1 mark .Yashwant attempted all questions and he scored 90 mark then how many questions he got wrong

Answer 1

Answer:

60×2=120-90=30

30 is the right answer.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

let the correct answer be x

incorrect answer = 60 - x

2x - (60 - x) * 1 = 90

2x - 60 + x = 90

3x = 150

x = 50

incorrect answer = 60 - x = 60 -50

incorrect answer = 10