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08 Mar 2021, 08:15
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
75% (02:31) correct
25%
(02:35)
wrong
based on 285
sessions
History
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In 120 litres of mixture of milk and water, water is only25%. The milkman sold 20 litres of this mixture and then he added 16.2 litres of pure milk and 3.8 litres of pure water in the remaining mixture. What is the percentage of water in the final mixture?
(A) 22%
(B) 23%
(C) 24%
(D) 30%
(E) 32%
(A) 22%
(B) 23%
(C) 24%
(D) 30%
(E) 32%
08 Mar 2021, 08:38
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Given:
In 120 litres of mixture of milk and water, water is only 25%.
The milkman sold 20 litres of this mixture and then he added 16.2 litres of pure milk and 3.8 litres of pure water in the remaining mixture.
Asked: What is the percentage of water in the final mixture?
In 120 litres
Milk = 90 litres
Water = 30 litres
In 20 litres sold
Milk = 15 litres
Water = 5 litres
In remaining 100 litres
Milk = 75 litres
Water = 25 litres
After adding 16.2 litres of pure milk and 3.8 litres of pure water
Milk = 91.2 litres
Water = 28.8 litres
Total = 120 litres
Percentage of water = 28.8/120 = 24%
IMO C
In 120 litres of mixture of milk and water, water is only 25%.
The milkman sold 20 litres of this mixture and then he added 16.2 litres of pure milk and 3.8 litres of pure water in the remaining mixture.
Asked: What is the percentage of water in the final mixture?
In 120 litres
Milk = 90 litres
Water = 30 litres
In 20 litres sold
Milk = 15 litres
Water = 5 litres
In remaining 100 litres
Milk = 75 litres
Water = 25 litres
After adding 16.2 litres of pure milk and 3.8 litres of pure water
Milk = 91.2 litres
Water = 28.8 litres
Total = 120 litres
Percentage of water = 28.8/120 = 24%
IMO C
08 Mar 2021, 09:18
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On removing 20 litres from 120 litres mixture containing 25 % water, we will get balance mixture which contains 75 litres of milk and 25 litres of water.
Now if we mix 20 litres of mixture containing 3.8 litres of water we get new mixture that contains 25 + 3.8 = 28.8 litres of water.
Therefore 28.8 is 24% percent of complete 120 mixture obtained after mixing two solutions.
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Now if we mix 20 litres of mixture containing 3.8 litres of water we get new mixture that contains 25 + 3.8 = 28.8 litres of water.
Therefore 28.8 is 24% percent of complete 120 mixture obtained after mixing two solutions.
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