In a test 6 marks are given for every correct answer and -2 marks are given for every incorrect answer. Shyam answered all the questions and scored 40 marks though he got 10 correct answers. How many incorrect answers had he attempted?
Answers
Answered by
1
Answer:
total marks gain by shyam=40
10 correct question marks=60
Step-by-step explanation:
let no of incorrect question =x
marks for inorrect question =(-2x)
(-2x)+60=40
after solving this equation
x=10
Answered by
6
Answer:
marks given for correct answer = 6
marks given for incorrect answer = -2
Step-by-step explanation:
no of correct answer given by Shyam = 10
marks obtained by giving correct answer = 60
total marks secured = 40
total no of marks reduced by giving incorrect answer = 60 - 40 = 20
no of questions which answers where incorrect = 20/2
= 10
hence he gave 10 incorrect answer
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