Question

6. In a class test containing 10 questions, 5 marks are awarded for every correct
answer and 2 marks are deducted for every incorrect answer and 0 for questions
not attempted.
(i) Rohit gets four correct and six incorrect answers. What is his score?
(ii) Seema gets 5 correct and 5 incorrect answers. What is her score?
(ili) Ritu attempted 7 questions and gets only 2 correct answers. What is her
score?​

Answer 1

Answer:

(i)   8

(ii) 0            (iii)  0

Step-by-step explanation:

(i) 4*5-6*2 = 20-12=8

(ii)5*5-5*2=15

(iii) 2*5-5*2=0

Answer 2

Answer:

• Rohit = 8 marks
• Seema = 15 marks
• Ritu = 0 marks

Step-by-step explanation:

Given :

Total questions = 10

Marks for correct answer = 5 marks

Marks for incorrect answers = (–2) marks

Marks for not attempting = 0 marks

Solution :

i) Rohit gets four correct and six incorrect answers. What is his score?

• Correct = 4
• Incorrect = 6

⇒ 5(4) + (–2) × (6)

⇒ 20 + (–12)

⇒ 8

Rohit scored = 8 marks

$\rule{300}{1.5}$

ii) Seema gets 5 correct and 5 incorrect answers. What is her score?

• Correct = 5
• Incorrect = 4

⇒ 5(5) + (–2) × (5)

⇒ 25 + (–10)

⇒ 15

Seema scored = 15 marks

$\rule{300}{1.5}$

iii) Ritu attempted 7 questions and gets only 2 correct answers. What is her score?

• Correct = 2
• Incorrect = 5

⇒ 5(2) + (–2) × 5

⇒ 10 + (–10)

⇒ 0

Ritu scored = 0 marks