Ella collects 50 bottles to recycle. of the bottle she collects 19 are plastic and the rest are glass. what percent of the bottles are glass

Glass bottles =total number of bottles - numeber of bottle of plastic
gass bottles=50-19=31 bottles of glass.

percent of the bottles are glass=(number of bottles of glass*100%) / total number of bottles.

percent of the glass bottles=(31 bottles * 100%) / 50 bottles=62%

the percent of the bottles of glas is 62%