if a man byes 1 lt of milk for 12 Rupees and mixes with 20% of water and sells it for Rs. 15 then what is percentage of gain

2 Answers on this Question

1. After the mixing, 1lt of the mixture has 0.8lt of milk and 0.2lt of water. 1lt of milk costs Rs.12 so 0.8lt of milk costs 0.8 x 12 = 9.6
   He sells the mixture at Rs.15,
   so profit%=(15-9.6)/9.6 x 100 = 56.25%

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