Question

in 4 litres of milk and water mixture the concentration of milk is 80% a woman takes out 20 %of the total mixture and add the same amount of water with the total quantity of new mixture she wants to prepare coffee where the concentration of water should be 60% how many litres of more water she will require to prepare the coffee ​

Answer 1

Answer:

she needs more 266.67 ml of water to prepare coffee

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