the girls want to have streamers of ribbons hanging from the entrance door. they plan to put 11 six foot long ribbons on the door. The ribbons comes in 24-foot long rolls. how many rolls do they need?
you can get 4 - 6ft long rolls out of one 24ft long roll
two 24ft long rolls will produce 8 - 6ft long rolls
and three 24ft long rolls will produce 12 - 6ft long rolls
so the girls will need three 24ft long rolls for their purpose (note: they will be left with one extra 6ft long roll)