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Abhinav scores 80% in physics and 66% in chemistry and the maximum marks of both the papers are 100. what percent does he score in maths which is of 200 marks, if he scores 80% marks in all the three subjects:

74%
84%
87%
83%

Correct Answer: 87%

Explanation:

$\frac{80}{100} + \frac{66}{100} + \frac{x}{200} = \frac{320}{400}$

=>x = 174 => 87%

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