A milkman has two types of milk: A and B. Type A has 90% pure milk and 10% water while type B has 95% pure milk and 5% water.

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Type A contains milk be 90 litres

Type B contains milk be 95 litres

To get the milkman have 92 litres of milk we have

 

  A(90)  B(95)

 

 

  C(92)

 

 

  (95-92) = 3  (92-90) = 2

Hence A and B mixes in ratio 3: 2 respectively

In 30 litres of mixture, type A mixed = *30 = 18 litres

Type B mixed = *30 = 12 litres
 

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