Alligation or Mixture problems
A piece of an alloy of two metals (A and B) weighs 15 gms and costs Rs. 150. If the weights of the two metals be interchanged, the new alloy would be worth Rs. 120. If the price of metal A is Rs. 6 per gm, find the weight of the other metal in the original piece of alloy.

12 gms
5 gms
8 gms
10 gms

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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.

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

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