InterviewSolution
Saved Bookmarks
| 1. |
In what ratio must a mixture of 15% spirit strength be mixed with that of 25% spirit strength to get a mixture of 21% spirit strength? 1). 1 : 32). 2 : 3 3). 3 : 4 4). 4 : 5 |
|
Answer» Solution: Let the RATIO of the MIXING be x:y 15% of x and 25% of y MUST be mixed to give 21% of (x+y). (15x/100) + (25y/100) = (21/100)(x + y) (15x + 25y)/100 = 21(x +y)/100 15x + 25y = 21x + 21y 21x - 15x = 25y - 21y 6x = 4y x/y = 4/6 x : y = 2 : 3 So, the correct OPTION is 2). 2:3 |
|