
In what ratio must water be mixed with milk to gain $16 \large\frac{2}{3} \%$ on selling the mixture at cost price?
A. 1 : 6 B. 6 : 1 C. 2 : 3 D. 4 : 3 Answer: Option AShow Answer
Solution(By Apex Team)
Let CP of 1 liter milk be Rs. 1 SP of 1 liter of mixture = Rs. 1, Gain = $\Large\frac{50}{3} \%$ CP of 1 liter of mixture = $100 \times \large\frac{3}{350} \times 1=\large\frac{6}{ 7}$ BY the rule of alligation, we have:
Ration of water and milk = $\Large\frac{1}{7}: \frac{6}{7}$ = 1 : 6

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