In a competitive exam 5 marks are awarded for each correct answer, while 2 marks are deducted for each wrong answer. Vidhya answered 120 questions and got 348.How much question did she answered correctly?
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HEY MATE!
HERE IS YOUR ANSWER
STEP BY STEP EXPLANATION :
Total question attempt =120
Let the number of correct questions be x
Then number of incorrect questions=120-x
According to the question
Marks awarded for correct answer=5
Marks awarded for incorrect answer= -2
so, 5x+[-2(120-x)]=348
5x-240+x=348
6x=348+240
6x=588
x=588/6=98=correct answer
120-x=120-98=22=incorrect answer
She answered 98 questions correct.
HOPE IT HELPED YOU ^_^
HERE IS YOUR ANSWER
STEP BY STEP EXPLANATION :
Total question attempt =120
Let the number of correct questions be x
Then number of incorrect questions=120-x
According to the question
Marks awarded for correct answer=5
Marks awarded for incorrect answer= -2
so, 5x+[-2(120-x)]=348
5x-240+x=348
6x=348+240
6x=588
x=588/6=98=correct answer
120-x=120-98=22=incorrect answer
She answered 98 questions correct.
HOPE IT HELPED YOU ^_^
samy0219:
thank you
your welcome
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