Alligation or Mixture problems
A person has two solutions of sugar with 30% and 50% concentration respectively. In what proportion should he mix two solutions to get 45% concentration in the resulting mixture?

3 : 1
2 : 3
3 : 2
1 : 3

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Alligation or Mixture problems
Kantilal mixes 80 kg of sugar worth of Rs. 6·75 per kg with 120 kg worth of Rs. 8 per kg. At what rate shall he sell the mixture to gain 20 %?

Rs. 9
Rs. 8·20
Rs. 7·50
Rs. 8·85

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