Question

16 Quest
The ratio of boys and girls in a class is 5:3. 20% of the boys and 60% of the girls have passed in
first class. What percentage of the class has passed in first class?​

Answer 1

Answer:

the correct answer is 35%

Let the number of boys and girls be 5x and 3x.

Number of those who are passed in first class

  =20%of5x+60%of3x 

 =(10020×5x)+(10060×3x)

 =x+59x

 =514x

Then, required percentage

  =(514x×(5x+3x)1×100)%

 =514x×8x100%

 =35%