Mathematics
Medium
Question
A student scored an average of 80 marks in 3 subjects: Physics, Chemistry and Mathematics. If the average marks in Physics and Mathematics is 90 and that in Physics and Chemistry is 70, what are the marks in Physics?
A
60
B
64
C
72
D
80
✓ Official correct answer
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A
60
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B
64
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C
72
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D
80
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