Question

In a mixture of milk and water, there is only 26% water. After replacing the mixture with 7 liters of pure milk , the percentage of milk in the mixture become 76%. The quantity of mixture is:

A) 65 liters B) 91 liters C) 38 liters D) None of these

Answer 1

Answer:

B) 91 litres

Step-by-step explanation:

        Milk             Water  

        74%             26%        (initially)  

        76%             24%        ( after replacement)  

 

 Left amount = Initial amount (1−replaced amount total amount)  

  24  = 26(1−7k)

=> k = 91