Question

In a class test 6 marks are given for each correct answer and -3 marks are given for every wrong answer. If Ravi answered 8 questions correctly and got 42 marks find out how many questions did he answer incorrectly. explain how

Answer 1

Answer:

2

Step-by-step explanation:

Let the number of questions attempted incorrectly be x

Then,

8(6) + x(-3) = 42

=> 48 + (-3x) = 42

=> 48 - 3x = 42

=> 48 - 42 = 3x

=> 3x = 6

=> x = 2

The number of questions he answered incorrectly = 2