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Doctors Medicines MCQs Q&A

  1. Statement I and either Statement II or Statement III are sufficient to answer the question.
  2. All the statements together required to answer the question.
  3. All the statements together are not sufficient to answer the question.
  4. Statement II and either Statement I or Statement III are sufficient to answer the question.
  5. Any two statements together are sufficient to answer the question.
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1 Answers

Option 4 : Statement II and either Statement I or Statement III are sufficient to answer the question.

Suppose the speed of boat in still water and speed of the current is ‘a’ and ‘b’;

Statement I:

2D/(a + b) = D/(a – b)

⇒ a + b = 2a – 2b

⇒ a = 3b ---- (1)

Statement III:

Speed of the boat in still water is three times the speed of the current;

∴ a = 3b ---- (2)

Here we can see that Statement I and III both are giving the same information.

Statement II:

The boat goes 720 meters in 1 hour downstream;

∴ (a + b) × 60 = 720

⇒ (a + b) = 12

Now with the help of statement I or II, we can get the value of ‘a’ i.e. the speed of the boat.

∴ Statement II and either Statement I or Statement III are sufficient to answer the question.
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