Alligation or Mixture problems
A shopkeeper has 50 kgs of rice. He sells a part of it at 20% profit and the rest at 40% profit. If he gains 25% on the whole, find the quantity of each part.

21.5 kgs and 23.5 kgs
12.5 kgs and 37.5 kgs
23.5 kgs and 21.5 kgs
37.5 kgs and 12.5 kgs

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Alligation or Mixture problems
In a class of 30 students , the average weight of boys is 20 kg and the average weight of the girls is 25 kg . The fraction of boys out of the total students of the class is

5/6
3/4
4/5
Data insufficient

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Alligation or Mixture problems
Milk and water are mixed in a vessel A as 4:1 and in vessel B as 3:2. For vessel C, if one takes equal quantities from A and B, find the ratio of milk to water in C.

9:1
7:3
3:7
1:9

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