You need a 15% alcohol solution. on hand, you have a 210 ml of a 35% alcohol mixture. how much pure water will you need to add to obtain the desired solution?

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.