Question
A bottle contains 100% phenyl. 13 of it is replaced with water. The operation is repeated 4 times. What is the ratio of phenyl: water after the last operation?
Answer: Option D
:
D
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D
Option (d)
Liquid A left taken nth operationInitial quantity of A in the vessel=(a−b)nan
Amount of phenyl remaining =(1−13)4=1681
Therefore, ratio or phenyl:water = 16:65. (81-16=65)
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