Question

In a test (+5) marks are given for every correct answer and (-2) marks are given for incorrect answer. Dayana answered all the questions and scored 30 marks though she got 10 correct answer. Deric also answered all the questions and scored (-12) marks though he got 4 correct answers. (1) How many incorrect answers had they attempted?​

Answer 1

Answer:

5 The h h h h k k a samman ke sath hi sath men yah bat samane i thi ki vah apane pati se kaha tha man bhi use

Answer 2

Answer:

Dayana:

The total marks obtained will be

X(+5) + Y(-2),

where X is number of correct answers and Y is number of wrong answers

Dayana got 10 correct answers and scored 30 marks. Let the incorrect answers be n

So here,

• 10(+5) + n(-2) = 30
• 50 - 2n = 30
• n = 10

So Dayana attempted 10 incorrect answers.

Deric:

He attempted 4 correct answers and got -12 marks. Let incorrect answers be n

• 4(+5) + n(-2) = -12
• 20 - 2n = -12
• n= 16

So Deric attempted 16 incorrect answers

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