Question

Q.26 In a class test (+3) marks are given for every correct answer and (-2) marks are given

for every incorrect answer. And no marks if not attempting any question.

1. Radhika scored 20 marks if she has got 12 correct answer, how many question has

she attempted incorrectly.

2. Mohini scored -5 marks in this test though she has got 7 correct answers. How many

question has she attempted incorrectly.​

Answer 1

Answer:

1-8quesincorrect

Step-by-step explanation:

right 1ues 12*3= 36

Answer 2

Answer:

1no.8 and 2no.13

Step-by-step explanation:

In a class test +3marks are given for every correct answer and - 2marks are given for every incorrect answers.

1NO.Radhika get 12 correct answers Therefore, the score will be =12x3=36

But she scored 20 marks

Therefore, No. of question she attempted incorrectly =(36 - 20)/2=8

Ans:She attempted 8 incorrectly

2NO.Mohini got 7 correct answera

Therefore, the score will be =7x3=21

But she scored - 5 marks

Therefore, No. of question she attempted incorrectly =(21-(-5))/2=(21+5)/2=13

Ans : She attempted 13 incorrectly.