Question

3. In a test (+5) marks are awarded for every correct answer, (-2) for every incorrect answer and 0 for not attempting the question.
(i) Renu scored only 40 marks inspite of getting 10 correct answers. How
many questions has she attempted incorrectly?
(ii) Rohit scored ( -3) marks in this test though he has got 3 correct
answers. How many questions has he attempted incorrectly?
U GET 50 POINTS IF UR FIRST ANSWER

Answer 1

Answer:

I am unable to understand please tell me in another way

Answer 2

Answer:

(i)5 (ii)9

Step-by-step explanation:

x=correct question y=incorrect questions

(i) 40=5x-2y

x=10

40=50-2y

y=5

hence ,incorrect questions =5

(ii) -3=5x-2y

x=3

-3=15-2y

y=9

hence, incorrect questions=9