Question

In a class test containing 10 questions, 5 marks are awarded for every correct answer and (-2) marks are awarded for every incorrect answer and 0 for questions not attempted.

1. Mohan gets 4 correct and 6 incorrect answers. what is his score?
2. Reshma gets 5 correct answers and 5 incorrect answers, what is her score?
3. Heena gets two correct and five incorrect answer out of seven questions she attempts. what is her score?

Answer 1

Given :-
5 marks are awarded for every correct answer
(-2) marks are awarded for every incorrect answer
0 for questions not attempted

Now 

1) Mohan gets 4 correct and 6 incorrect answers.

(4×5) + [6×(-2)]
20 -12
=8

So he score 8 marks in the class test.

2)Reshma gets 5 correct answers and 5 incorrect answers

so = According to question

(5×5) + (5×-2)
25 - 10 
= 15

Hence she score 15 marks in the class test.

3)Heena gets two correct and five incorrect answer out of seven questions she attempts.

Now A.T.Q
(2×5) + (5×-2) + (3×0)
10 - 10
=0

Hence she score 0 marks in the class test.