A) 30, 30
B) 35, 25
C) 25, 35
D) 20, 40
Correct Answer: A
Solution :
Mean weight of 60 students = 40 kg Let the number of boys be Then, the number of girls Now, mean weight of boys = 50 Sum of weights of boys ?(i) Also, mean weight of girls = 30 Sum of weights of girls ?(ii) Now, Number of boys = 30 And number of girlsYou need to login to perform this action.
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