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Doctors Medicines MCQs Q&A

  1. 100 x (X - Y)/(X – Y - Z)
  2. 100 x (X - Y + Z)/X
  3. 100 x (X - Y - Z)/(X + Y)
  4. 100 x (X - Y)/(X – Y + Z)
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1 Answers

Option 2 : 100 x (X - Y + Z)/X

Calculation:

The meeting started with X people. Y left the room during the first hour.

So, X people have been in the room since the meeting started.

This will be the denominator of the equation.

∴ To start with there were P people, Q of whom left the room and another R joined the group.

∴ the number of people in the room after the first hour = X - Y + Z.

This expression is the numerator of the expression.

∴ Required expression is 100 x (X - Y + Z)/X

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