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In an examination, the average score of ...

In an examination, the average score of students in a class who passed is 69 and that of who failed is 61. If the average score of all the students, who appeared in the examination is 66, then the percentage of students who passed is:
एक परीक्षा में, किसी कक्षा में पास करने वाले छात्रों का औसत अंक 69 है तथा फेल करने वाले छात्रों का औसत अंक 61 है | यदि परीक्षा में शामिल होने वाले सभी छात्रों का औसत अंक 66 है, तो पास करने वाले छात्रों का प्रतिशत ज्ञात करें |

A

37.5

B

60

C

62.5

D

56

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