Question

The average weight of the students of a class is 40 kgs. 5 new students with the average weight of 46 kgs having joined the class, the average weight of the class is increased by 2 kg. Find the number of students in the class originally?
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Answer 1

Answer:

Step-by-step explanation:

X1+X2+........Xn= 40n

n is the no of students

Total wt of 5 students =46×5=230kg

40n+230=42(n+5)

n=10

Students =10