Question

In an examination there are 20 questions each right answer earns 5 marks and each answer deduct 2 marks. Ravi attampted 12 question and scored 46 marks how many answer did he get wrong

Answer 1

I hope it will be helpful for you

Answer 2

let the no. of correct answer be x
and let the no. of wrong answer attempt be y

ATQ

5x+2y=46 ----------- 1

and

x+y=12-------------2

x=12-y-------------3

5(12-y)+2y=46
60-5y+2y=46
60-3y=46
60-46=3y
14=3y
y=14/3