Question

from 2003-2004,the number of boys in a class increased by 25% and the number of girls decreased by 16 2/3%.if girls form 25% of the total students in 2004,what percentage of the total students in 2003 are boys?

Answer 1

Answer:

you studies in which class ??

Answer 2

Answer:

66.66%

Step-by-step explanation:

Let the total no. of students in 2004 be 100.

so the no of girls = 25 (because 25% of the total strength in 2004 are girls)

consequently no of boys = 75

from 2003-04, the number of girls decreased by 16.66%.

if the no of girls in 2003 were g, then we have

g-0.1666g = 25

therefore number of girls in 2003 were 30.

similarly number of boys in the class in 2003 is given by

b+1.25b = 75 = 60.

total strength in 2003 = 60+30 = 90.

percentage of boys in 2003 = (60/90)* 100 = 66.66%