Alligation or Mixture problems
The average weight of boys in a class is 30 kg and the average weight of girls in the same class is 20kg. If the average weight of the whole class is 23.25 kg, what could be the possible strength of boys and girls respectively in the same class?

13 and 27
14 and 16
17 and 27
None of these

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Alligation or Mixture problems
Shiva purchased 280 kg of Rice at the rate of 15.60/kg and mixed it with 120 kg of rice purchased at the rate of 14.40/kg. He wants to earn a profit of Rs. 10.45 per kg by selling it. What should be the selling price of the mix per kg?

Rs. 25.69
Rs. 27.54
Rs. 22.18
Rs. 26.94

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

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