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In a quiz contest, +2 marks are given for every correct answer and -1 mark is given for every incorrect answer Riyaz scored 15 marks. If he got 9 answers correct, how many questions he attempted incorrectly?
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2 votes
In a quiz contest, +2 marks are given for every correct

answer and -1 mark is given for every incorrect answer 
Riyaz scored 15 marks. If he got 9 answers correct, how 
many questions he attempted incorrectly?
​

User Errin
by
5.3k points

1 Answer

2 votes
9*2=18
18-15=3

Riyaz got 3 questions incorrect.
User Websky
by
5.7k points
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