Question

The mean weight of 80 students of a class is 56,25 kg. The mean weight of boys and
girls being 60 kg and 50 kg respectively. Determine the number of boys and girls in
10 20 years, (l) 50, (in) 12.8 (IV)
(B.A. Ajmer 2005)
the class.
of cycle fyres for the first 20 doym​

Answer 1

Answer:

→ Total weight of class = 80 * 56.25 = 4500 kg . and, → Mean weight of boys = 60 kg. → Total weight of boys = 60 * x = 60x kg .September 13 2020