Class B has 50% more students than class A. Number of girls in class A is equal to number of boys in class B. The percentage of girls is the same in both classes.What percentage of the student group are boys?

40% of boys in total group of students (class A and Class B combined) Solution:-B (number of students in class B) = 1.5 A (number of students in class A); Ag (Girls students in class A) =Bb(Boys in class B); Ag/A=Bg/B by solving we get 40%

percentage of the student group are boys is (Ab+Bb)/(A+B) =>(A-Ag+Bb)/(A+1.5A)=>(A-Ag+Ag)/2.5A (Since 2nd condition Ag=Bb); A/2.5A =>0.4 or 40% in percentage terms