Given =
total people attented a rock festival = 10483
number of boys more than girls in the rock festival = 811
fewer adult over 50 year of age = 2481
find out the each group attented the festival
To proof =
let us assume that the number of the girls be x.
let us assume that the number of the boys be y.
let us assume that the number of the adults be z.
thus we have equation
x + y + z = 10483
number of boys (y) = x + 811
number of adults (z) = x - 2481
put these all value inthe equation x + y +z = 10483
we get
x + x + 811 + x - 2481 =10483
3x -1670 = 10483
3x = 12153
x = 4051
the number of girls are 4051
the number of boys = 4051+ 811
i.ethe number of boys are 4862
the number of adults = 4051 - 2481
i.e number of adults are 1570.
Hence proved
