Gabe amodeo, a nuclear physicist, needs 60 liters of a 40% acid solution. he currently has a 30% and a 60% solution. how many liters of each does he need to make the needed 60 liters of 40% acid 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.