Question

28. The average weight of a class is 42.5 kg. If 5 new students whose weight
respectively are 44.5,53.5,42.5,41.5 and 43 kgs. join the class and average weight of
the class becomes 42.6 kg. Find the original no of students in the beginning.
(a) 125
(b) 130
(C) 150
(d) 120​

Answer 1

Answer:

in the beginning there are 120 students