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Official PYQ · 2018QGA-8MCQ2 marks

GATE CS 2018 QGA-8 — General Aptitude

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In a party, 60%60\% of the invited guests are male and 40%40\% are female.If 80%80\% of the invited guests attended the party and if all the invited female guests attended, what would be the ratio of males to females among the attendees in the party?

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Answer: B

Let the total number of invited guests be 100100.

  • Invited Males: 60%60\% of 100=60100 = 60
  • Invited Females: 40%40\% of 100=40100 = 40

According to the problem:

  • Total attendees: 80%80\% of the invited guests =80= 80
  • Female attendees: Since all invited female guests attended, the number of female attendees is 4040.

We can find the number of male attendees by subtracting the female attendees from the total attendees:

Male attendees=Total attendees−Female attendees=80−40=40\text{Male attendees} = \text{Total attendees} - \text{Female attendees} = 80 - 40 = 40

The ratio of males to females among the attendees is:

Ratio=Male attendeesFemale attendees=4040=1:1\text{Ratio} = \frac{\text{Male attendees}}{\text{Female attendees}} = \frac{40}{40} = 1:1

Therefore, the correct option is B.

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