Question

In an examination one mark is 1 is given for each correct answer and one mark is deducted for each incorrect answer
Total number of questions is 30. If Mohan gives correct answers to 20 questions and incorrect answer to 10 question
what is his final score ?​

Answer 1

Answer:

10 is the answer

Step-by-step explanation:

20 =20-10 =10

Answer 2

X+y=30

20+10=30

As 1 mark is reduced for every wrong answer

20-1×10= Final score

Final score = 10 marks out of 30