Question

In a quiz, +2 marks are given for a correct answer, -1 marks for an incorrect answer and 0 marks for not attempting a question. Radhika scored 30 marks. If she got 18 correct answers, how many questions did she attempt incorrectly?
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Answer 1

Answer:

She got 18 corrct that means

18x2=36 marks

her total marks are 30

30-36=-6

-6÷-1= 6 incorrect answers

Step-by-step explanation:

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Answer 2

Answer:

The answer is 18(correct) and 6(incorrect)

Step-by-step explanation:

Given :-

Correct answer marks : +2

Incorrect answer marks : -1

Not attempting : 0

Total marks scored by Radhika : 30

Total correct answers given by her : 18

Incorrect answers : ?

Correct answer marks: 18x2 = 36

Total marks she scored = 30

Correct answer marks - Total marks she scored = Incorrect answer marks

==> 36-30= 6

Therefore the answer is 18 and 6

Hope it helped u friend .