Question

In a test +5 marks given for every correct answer and -2 for every incorrect answer. Radhika answered all the questions and scored 30 marks though she got 10 correct answer. jay also answered all the questions and scored -12 marks though he got 4 correct answers.how many incorrect answers had they attempted?​

Answer 1

Answer:

total number of questions 10×5

50

questions out of that radhika score 30 mark

Step-by-step explanation:

10×5=50 totally mark of ten questions

score mark 30=50-30

20

wrong questions-2 20÷2 10

10 questions are wrong

Answer 2

They had attempted 10 incorrect answers.

Step-by-step explanation:

Marks given for one correct answer = 5

So, marks given for 10 correct answers = 5x10 = 10

Radhika's Score = 30

Marks obtained for incorrect answer = 30-50= -20

Marks given for one incorrect answer = (-2)

Therefore, number of correct answers = (-20) ÷ (-2) = 10

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