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  1. A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of water in litres to be mixed with each litre of milk to get a 25% profit is
    1. 1
      4
    2. 1
      5
    3. 1
      1
      4
    4. cannot be calculated without knowing the cost price of milk
Correct Option: B

Suppose C.P. of 1 litre of milk = $ 1
S.P. of 1 litre of mixture = $ 1

∴ C.P. of 1 litre of mixture =
100
× 1 = $
4
1255


Milk : Water =
4
:
1
= 4 : 1
55

Sum of the Ratios = 4 + 1 = 5
Volume of water mixed =
Ratio of water
Sum of the ratios

Volume of water mixed =
1
5



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