In a test , + 4 marks are given for every correct answer and -2 marks are given for every wrong answer . Rahul attempted all the questions and scored + 20 marks , he got 10 correct answers . How many questions are given in the test .
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Answer:
20questions were asked in the test.
Step-by-step explanation:
marks of10correct questions= 40
marks he obtained = 20
questions he attempted wrong= (40-20)/2
=10
total questions= 10 +10=20
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