in a test 5 marks are given for every correct answer and -1 for for every incorrect answer if rohit answered all the questions and scored 30 marks through he got 10 correct answer . find the number of incorrect answer
Answers
Answered by
0
Answer:
The no.of incorrect ans is 4
Step-by-step explanation:
Answered by
7
Answer:
His total incorrect answers = 20
Step-by-step explanation:
Total Questions = 15
Correct answer gets 5 marks.
incorrect answer losses 1 marks.
Rohit all questions but he scored 30 marks.
∴ For Correct answers : 10Q x 5M = 50M &
For Wrong answers : 20Q x -1M = -20M
His total score = 30 marks.
∴ His total incorrect answers = 20
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