GATE CSE 2018 | Question: GA-8

Question

In a party, $60\%$ of the invited guests are male and $40\%$ are female.If $80\%$ 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?

• A. $2\colon 3$
• B. $1\colon 1$
• C. $3\colon 2$
• D. $2\colon 1$

Comments

1:1

I assumed 100 people

60 male

40 female

80 came

All females were these. Thus 40 female

Hence 40 male

So 1:1

Answer 1

Assume $100$ people are invited, so $60$ men and $40$ women invited.

During the party only $80$ people showed up, and since all women attended $\Rightarrow 80 = 40 +$ men

Therefore, men $= 40$

men : women $= 1:1$

Correct Answer: $B$

Answer 2

Answer is B-  1:1 

Lets consider total guests are x.

then,

Comments

This is the proper explanation using unknown variable x.

Answer 3

Lets say 100 people are invited.
60 male, 40 female.

Total 80 people came.
All female came too.
So x+40= 80
=> x = 40 male came.

Male/Female = 1:1

Answer 4

suppose there are 100 people then

men =60

women=40

as all women attend so 20 men did not attend party

so men=40

women=40

so 1:1