Latest CTS Aptitude Question SOLUTION: A mixture of milk and water contains 7% water. What quantity of pure milk should be added to 12 litres of mixture to reduce water to 4%? 1) 5 litres 2) 6 litres 3) 7 litres 4) 8

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A mixture of milk and water contains 7% water. What quantity of pure milk should be added to 12 litres of mixture to reduce water to 4%?
1) 5 litres
2) 6 litres
3) 7 litres
4) 8 litres
5) None of these

Asked In CTS ABHINAV PUSHPAM (8 years ago)

Unsolved Read Solution (3)

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Read Solution (3) :

Diksha Kumari  (8 years ago)

12 litre of mixture contain 7 % of water i.e quantity of water = 12*7/100 =0.84 litre
Now, 11.16 litre is milk in 12 litre of mix.
So, from question,let x amount of milk is to be added
(11.16+x)/0.84 = 96/4 ( It's saying the % water is reduced to 4% i.e new ratio of water:milk = 96/4)
Solving this equation you will get x=9.
So, ans is none of these.

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Shivam pathak  (7 years ago)

ans :(11.16+x)/.84=96/4
x=5

Is this solution Helpfull? Yes (1) | No (3)  

Ganesh  (4 years ago)

Current litres= 12
Initial %=7
Final % =4

Direct Formula = (Current Litres*( Initial %-final %))/Final
%--->10*3/4=15 Litres

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