Two containers, a and b begin with equal volumes of liquid. 120 ml is then poured from a to b. container b now contains four times as much liquid as a. find the volume of liquid left in container a at the end

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?