Quincy is using 320 pieces of stone tile to make red white and blue mosaic. if 20% of the pieces are blue and 35% are white how many pieces are red?

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.