Question

A milkman bought 15 L of milk and mixed 3 L of water in it. If the price per kg of the mixture becomes Rs.22, what is cost price of the milk per litre?​

Answer 1

Answer:

Step-by-step explanation:

Let CP of milk be Rs. x per kg.

Then, according to the rule of allegation,

Therefore, 22:(x−22)=15:3

22x−22=153

22x−22=5

= 22 = 5x - 110

= 5s = 132

Therefore x = Rs.26.40

Answer 2

The cost price would be 26.4 rupees per liter.

Step-by-step explanation:

Consider the cost of pure milk per liter is x rupees per liter,

So, cost of 15 L of pure milk = 15x rupees,

Price of 3 liter of milk = 0 liter

Now, after adding 3 liter of milk,

Total cost of 18 L mixture = 15x + 0 = 15x rupees,

∵ Resultant mixture is of 22 liter per liter

So, total cost = 22(18)

$\implies 15x = 22(18)$

$\implies x =\frac{22(18)}{15}=\frac{22(6)}{5}=\frac{132}{5}=26.4$

Hence, the cost price of the pure milk was 26.4 rupees per liter.

#Learn more:

A milkman bought 50 liters of milk for $15 per liter and sold it at a profit of $ 150. what was the selling price of milk per liter.

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