In an examination there are three papers each of 100 marks .A obtained 64 mark in the 1st paper and mark in the 2nd paper.If he needs an Overall score of 80%how many marks he needs to score in 3rd paper?
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Step-by-step explanation:
Total marks =100+100+100=300
Let x marks obtained by the candidate in third paper
Marks obtained by the candidate in second paper =75
Mark obtained in first paper =53
Total marks obtained by the candidate =53+75+x−128+x
ACQ,
⇒(300128+x)×100=70
⇒128+x=3×70
⇒x=210−128
⇒x=82
Therefore, the candidate must obtain 82 marks in the third paper.
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