SSC NTA Delhi University Non-Teaching 2021 Mock Test Quantitative Aptitude Average

The average weight of the students in a class is 45 kg. When 4 new students of average weight of 39 kg join them, their average weight is reduced by 0.75 kg. What was the number of students in the class in the beginning?

1
26
2
24
3
28
4
25
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