there are 70 multiple multiple choice questions in a test. for every question question 2 marks are awarded and for every question that is not attempted or answer incorrect 1 marks is deducted from the total score of the correct answer. if a student scores 80 marks in the test then how many questions did he answer correctly?
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listen ye is baat pe depend krta h ki usne kitne seriously attempt kiye ...bina koi tukka mare ...
amitniranjan:
solve it yar
40
how give solution
are 70 questions h nd 2 marks h correct k taht means paper 140 marks ka h nd 80 correct kiye mtlb 80/2 =40 attempt kiye ....may be isse jada kiye ho jo negative ho gye uska estimate nhi kr skte
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CONSIDER 140 BE THE TOTAL MARKS FOR
THE TEST
HENCE THE CANDIDATE GOT 80 MARKS THE
REMAINING MARK IS 140-80=60
IF HE WRITE 20 QUESTIONS WRONG
TOTAL RIGHT ANSWER IS 50 QUESTIONS
THEN MARKS OBTAINED IS 5O×2=100
HE WRITE 20 WRONG ANSWER 20×1=20
HENCE THE TOTAL MARKS = (MARKS FOR CORRECT ANSWER ) - ( MARKS FOR WRONG ANSWER )
= 100 - 20 = 80
SO HE WROTE 50 RIGHT ANSWERS
PLEASE MARK IT AS BRAINLIEST
HOPE THIS WILL HELP
THE TEST
HENCE THE CANDIDATE GOT 80 MARKS THE
REMAINING MARK IS 140-80=60
IF HE WRITE 20 QUESTIONS WRONG
TOTAL RIGHT ANSWER IS 50 QUESTIONS
THEN MARKS OBTAINED IS 5O×2=100
HE WRITE 20 WRONG ANSWER 20×1=20
HENCE THE TOTAL MARKS = (MARKS FOR CORRECT ANSWER ) - ( MARKS FOR WRONG ANSWER )
= 100 - 20 = 80
SO HE WROTE 50 RIGHT ANSWERS
PLEASE MARK IT AS BRAINLIEST
HOPE THIS WILL HELP
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