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Doctors Medicines MCQs Q&A

  1. Quantity A > Quantity B
  2. Quantity A < Quantity B
  3. Quantity A ≥ Quantity B
  4. Quantity A ≤ Quantity B
  5. Quantity A = Quantity B
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1 Answers

Option 3 : Quantity A ≥ Quantity B

Solving for Quantity A:

Let the number be ‘x’

Sum of 9 numbers = 9 × 115 = 1035

When the number is added, sum of 10 numbers = 1035 + x

Average of 10 numbers = 27 + x

⇒ 10(27 + x) = 1035 + x

⇒ 270 + 10x = 1035 + x

⇒ 9x = 765

⇒ x = 765/9 = 85

⇒ Quantity A = 85

Solving for Quantity B:

Let the numbers be ‘x’ and ‘(x + 8)’

Sum of 8 numbers = 8 × 96 = 768

Sum of 10 numbers = 768 + x + x + 8 = 776 + 2x

Average of 10 numbers = 96 - 3 = 93

⇒ 776 + 2x = 10(93)

⇒ 2x = 930 - 776

⇒ x = 154/2 = 77

⇒ x + 8 = 77 + 8 = 85

⇒ Quantity B = 77, 85

∴ Quantity A ≥ Quantity B
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Related Questions

In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option. Quantity A: There are two inlet pipes A, B and two outlet pipes C, D inlet pipe B takes 7 hours more to fill the tank when compared to A. Two outlet pipes when working together can empty the tank in 3.5 hours and efficiency of both the pipe is same if all of them working together can fill the tank in 2 hours. Calculate the time taken by A to fill the tank. Quantity B: The ratio of efficiencies of two pipes A and B is in the ratio 3 ∶ 2 and that of pipe B and C is 1 ∶ 3. Pipe A and B are inlet pipes, pipe C is outlet pipe working together they can fill the tank in 7.5 hours. Calculate the time taken by A to fill the tank when working alone.?
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