Math, asked by annurocksi420, 1 day ago

the mean weight of 150 students in a certain class is 60kg. The mean weight of boys is 70kg and that of girls is 55kg. Find the number of boys and the girls in the class

Answers

Answered by Shashwatisback
1

Step-by-step explanation:

X X ¯ 1 = Mean weight of boy = 70 kgs. X X ¯ 2 = Mean weight of girl = 55 kgs. X = Mean weight of all students = 60 kgs. ⇒ n1 = 50

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