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Aptitude Day 178

Problems to solve:
              
1. The average weight of 70 students in a class is 25 kg. 5 of them whose average weight is 35 kg leave the class and the other 5 students whose average weight is 20 kg join the class. What’s the average weight of the class?

2. The average of 6 men is increased by 5 years when 2 of them whose ages are 10 years and 12 years are replaced by 2 new men. The average age of the 2 new men is: 


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