Ryan has 360 stamps
let Ryan have x stamps , then Charlie has 5x ( 5 times as many )
the toal stamps combined is 2160, hence
x + 5x = 2160
6x = 2160 ( divide both sides by 6 )
x = [tex]\frac{2160}{6}[/tex] = 360
Ryan has 360 stamps and Charlie has ( 5 × 360 ) = 1800 stamps