railway RPF SI Mock Test Series 2024 Quantitative Aptitude Average

There are 75 boys and 45 girls in a class. If the average weight of boys is 60 kg and the average weight of girls is 40 kg, then find the average weight of the whole class. 

1
50 kg
2
52.5 kg
3
60.5 kg
4
50.5 kg
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