Question

class B has 40% more student class A.Number of girls in class A is equal to number of boys in class B. The percentage of girls the same in both classes. find the ratio of number of boys in class A to the number of girls in class B.​

Answer 1

Answer:

Given, Class B has 50% more students than class A.

Therefore, number of students in class B = 150.

Given, Number of girls in class A = Number of boys in class B. (Condition 1)

Given, Percentage of girls in both classes are same. (Condition 2)

When we take number of girls in class A = 60. (Which is 60% of the class)

So, Number of boys in class A = 40.

Given that percentage of girls in both classes are same.

So, Number of girls in class B = 60% of class B = (60*150)/100 = 90.

So, Number of boys in class B = 150 - 90 = 60.

So, The condition 1 is also satisfied ( 60 = 60 )

Answer :

Percentage of boys in class A = 40%

Percentage of boys in class B = 40%

Note : In the question nothing definite about the number of boys and girls in any class is given, So by hit and trial method I got to this solution

Answer 2

Answer:

60

Step-by-step explanation:

So, Number of boys in class A = 40. Given that percentage of girls in both classes are same. So, Number of girls in class B = 60% of class B = (60*150)/100 = 90. So, Number of boys in class B = 150 - 90 = 60.