Question

The average weight of 30 students in a class is 64 kgs. When 20 new students are admitted,
the average weight is reduced by 2 kgs. Find the average weight of new
students.​

Answer 1

Answer:

Average weight of 20 new students is 59 kg.

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Answer 2

average weight of 30 students is = 64

Total average weight = 30×64= 1920

when 20 students were addimted = some of original 30 weight of students + sum of 20 students / total students

64-2=1920 + sum of 20 students ÷

50

62×50= 1920 + sum averageof 20 students

3100-1920= 1180

1180÷ 20= 59 Answer