5 ml of content from bottle A is mixed with 5 ml of content from bottle B. The resultant mixture, when tested, detects the presence of I. If it is known that bottle A contains only P, what BEST can be concluded about the volume of I in bottle B?

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Question :

Started 1 month ago by Shashank in

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A.
10 ml or more
B.
Less than 1 ml
C.
10 ml
D.
1 ml

Option A is the correct answer.

Explanatory Answer

Now 50 ml of content in bottle A is 100% pure of which 5 ml is mixed with 5 ml from bottle B and
an impurity is detected. Now we can only detect an impurity if there is 10% or more impure
material.
Now Bottle A has 100% and we need final mixture to have 90% or less impurity which means that
Maximum % of P which bottle B can have is 80%.
This means that impurity content in bottle B is minimum 10ml and can be more than 10 too.
Thus Option A is the correct answer.