In a quiz contest, 2 points are given for every correct answer and -1 point is given for every wrong answer. Riyaz scores 15 points. If he got 9 answers correct, how many answers did he get wrong?
Answers
Answered by
8
2 points for every correct answer means for one correct answer he will score 2 points
9 correct answers means 2+2+2+2+2+2+2+2+2=18 points scored by Riyaz for answering the questions right
Now, 18-a=15
a=18-15
a=3
He got 3 answers wrong
That's why his final point is less than 18. it's 15
Bro/Sis, hope you understood the concept? if not ask me again.
Similar questions