Question

In a class test (+3) marks are given for every correct answer and (-2) marks are given for incorrect answer and no marks for attempting any question. Radhika scored 20 marks. If she has got 12 correct answers, how many questions she has attempted incorrectly ? Mohini scores (-5) marks in this test, though she has got 7 correct answers. How many questions she has attempted incorrectly?​​

Answer 1

Answer:

Now, we know that for every incorrect answer =−2 marks. So, the total marks for incorrect answers = marks for incorrect answer × number of incorrect answers. Hence, the number of incorrect answers is 8.

Answer 2

Answer:

the is answer is down

Step-by-step explanation:

Radhika - 12 correct answers means marks scored =12*(+3)=36 for correct answer

Marks scored= 20

correct answer  marks= 36

negative marks = 36-20=16

16 marks means no.of questions 16/2=8 questions

Hence 8 questions were answered wrongly

b] Mohini - 7 correct answers means 7*(+3) marks = 21 marks

marks scored = -5

correct answers marks = 21

negative marks =21-(-5)=21+5=26

26 marks means no.of questions =26/2=13 questions

Hence 13 questions were answerd wrongly