In a quiz programme the correct answer gets you 2 marks. For each wrong answer, one mark is deducted from total score. There are 50 question to be answered. If jasleen scored 76 marks for quiz,how many of her question were right?
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Answered by
8
Total marks Jasmeen could score=100
Marks Jasmeen could not score=24
Wrong attempts=12
Correct answers=50-12=38
shreyaruwais:
I guess you could prolong and make it clearer and i'm sorry if i hurt you.
In this there are wrong answers too, cause he has attempted 50 questions not 36
Answered by
20
let X be the right answers and Y be the wrong answers
therefore X + Y is equal to 50
for every right answer he got 2x marks
for every wrong answer he got Y marks
y is also equal to 50-x
so, 2x-y=76
2x=76+y
2x=76+50-x
2x+x=76+50
3x=126
x=126/3
x=42
Therefore, Jasleen has got 42 question's right and 8 wrong
therefore X + Y is equal to 50
for every right answer he got 2x marks
for every wrong answer he got Y marks
y is also equal to 50-x
so, 2x-y=76
2x=76+y
2x=76+50-x
2x+x=76+50
3x=126
x=126/3
x=42
Therefore, Jasleen has got 42 question's right and 8 wrong
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