The mean mark in statistics of 100 students in a class was 72. The mean mark of boys was 75. While their number was 70. The mean mark of girls in the class was

The mean mark in statistics of 100 students in a class was 72. The mea

1.	The mean mark in statistics of 100 students in a class was 72. The mean mark of boys was 75. While their number was 70. The mean mark of girls in the class was
A.	65
B.	60
C.	66
D.	62
Answer» B. 60

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The mean mark in statistics of 100 students in a class was 72. The mean mark of boys was 75. While their number was 70. The mean mark of girls in the class was

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