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In a class of 100 students, there are 70...

In a class of 100 students, there are 70 boys whose average marks in a subject is 75. If the average marks of the complete class is 72, then what is the average of the girls ?

A

73

B

65

C

68

D

74

Text Solution

Verified by Experts

The correct Answer is:
B
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In a class of 100 students, there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average marks of the girls ?

In a class of 100 students, there are 70 boys , whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average marks of the girls?

Knowledge Check

  • In a class of 60 students there are 20 girls who scored an average of 40 marks in the test, what is the average marks of the boys if the class average is 60 marks?

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    A
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    B
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