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10 Dec 2024, 01:30
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
73% (01:43) correct
27%
(02:12)
wrong
based on 153
sessions
History
Date
Time
Result
Not Attempted Yet
Two solutions, A and B, are produced by mixing milk and water in different quantities. The percentages of milk present in solution A and solution B are 60% and 70% respectively. What is the volume of solution A?
(1) The sum of the volume of milk present in solution A and solution B is 50 litres.
(2) The sum of the volume of solution A and solution B is 80 litres.
(1) The sum of the volume of milk present in solution A and solution B is 50 litres.
(2) The sum of the volume of solution A and solution B is 80 litres.
10 Dec 2024, 06:18
Kudos
Bookmarks
Bunuel
What we know: The percentage of Milk in A and B
Question: Volume of A = ?
What we need: The percentage of Milk in Mixture (to find the ratio of A and B in mixture AND the Volume of B or Mixture)
Statement 1: The sum of the volume of milk present in solution A and solution B is 50 litres.
The percentage of milk in final mixture is unknown hence
NOT SUFFICIENT
Statement 2: The sum of the volume of solution A and solution B is 80 litres
The percentage of milk in final mixture is unknown hence
NOT SUFFICIENT
Combining the statements
Final Volume = 80
Milk Volume = 50
i.e. Milk Percentage = 62/5%
We have everything we need hence
SUFFICIENT
However, the calculation is (60/100)*A + (70/100)*(80-A) = 50
Answer: Option C
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