Latest Infosys Aptitude Question SOLUTION: A mixture of 50 litres of milk and water contain 10% of water. How much water must be added to make water 20% in the given mixture?

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A mixture of 50 litres of milk and water contain 10% of water. How much water must be added to make water 20% in the given mixture?

Asked In Infosys (13 years ago)

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nishu jindal  (12 years ago)

5 liter water more

Is this solution Helpfull? Yes (2) | No (4)  

Rex  (6 years ago)

According to question,
Quantity of Water = 10% of 50 = 5 liter.
and, Milk = 45 liters
Let x br the amount of water to be added.
Now,
=> (5 + x) = 20% of (50 + x).
=> 5 + x = ( 50 + x ) / 5.
=> 25 + 5x = 50 + x
=> 4x = 25
=> x = 6.25 liter.

So 6.25 litres should be added to make the mixture 20% watery ( ;-) )

Is this solution Helpfull? Yes (2) | No   

Mrigendra Pratap Singh  (8 years ago)

According to question,
Quantity of Water = 10% of 50 = 5 liter.
and, Milk = 45 liter
Let x br the amount of water to be added.
Now,
=> (5 + x) = 20% of (45 + x).
=> 5 + x = ( 45 + x ) / 5.
=> 25 + 5x = 45 + x
=> 4x = 20
=> x = 5 liter.

Is this solution Helpfull? Yes | No (3)  

Debasish Mohanty  (6 years ago)

let add x ltr water to 50 ltr mixture
then 20% water=5+x
then, 50+x=5(5+x)
=>x=6.25

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