In a Quiz Contest, 2 points are given for every correct answer and -1 point is given for every wrong answer .riyaz score 15 points if he got 9 answers correct , how many answers did he get wrong?
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Answered by
26
Total points : 15
Riyaz scored correct :
Total : 9x2 = 18
So -3 have to be subtracted
So he got 3 wrong
Riyaz scored correct :
Total : 9x2 = 18
So -3 have to be subtracted
So he got 3 wrong
Answered by
2
Answer:
Correct answer 3
Step-by-step explanation:
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