Math, asked by nargis65, 11 months ago

a test contains 10 true false questions are correct answer is awarded 2 Marks and a wrong Answer is awarded -1 and a question not answered is awarded 0 a student attempt 7 questions and get 8 marks how many questions did the students answer correctly

Answers

Answered by sumeet1908

Answer:

Step-by-step explanation:

Let correct attempts be x and incorrect attempts be y

Total attempts = x+y = 7 ...(1)

Total marks = 2x-y = 8 ...(2)

adding (1) and (2)

3x +y-y = 7+8

3x = 15

x = 5 and y = 2

So 5 correctly attempted questions

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Answered by rahman786khalilu

Hope it helps you !....................

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