The following ternary figure shows the marks obtained by students A, B and C in an exam of 100 marks. Here, C received 10 marks in Physics, 50 marks in Chemistry and 40 marks in Mathematics. 
Which one of the following is CORRECT?
To solve this problem, we need to analyze the ternary diagram given and understand the scores of students A, B, and C in Physics, Chemistry, and Mathematics. Each side of the triangle represents 100 marks in one of the subjects.
From the diagram:
- Student C has been identified with scores: Physics = 10, Chemistry = 50, Mathematics = 40.
- Student B is positioned such that their scores in Mathematics and Physics are equal on the diagram.
Let's evaluate the given options:
- A's marks in Chemistry are more than C's marks in Physics.
From the diagram, A scored around 80 in Chemistry. Since C scored 10 in Physics, A's Chemistry score (80) is indeed more than C's Physics score (10). However, this does not conclude correctness regarding B's scores. - B has scored equal in Mathematics and Physics.
In the diagram, B's point is positioned such that the scores on the Mathematics and Physics axes are equal. Hence, this statement is correct. - A has scored 20 in Chemistry.
The diagram shows A with a Chemistry score of around 80, not 20. Thus, this statement is incorrect. - A has scored 80 in Chemistry.
This observation matches the diagram, as A's location shows an approximate Chemistry score of 80. However, we are looking for information specific to B's scores.
Based on this analysis, the correct and most relevant statement concerning the query is: B has scored equal in Mathematics and Physics.
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