A chemist has three different acid solutions. The first acid solution contains 25

A chemist has three different acid solutions. The first acid solution contains 25 % acid, the second contains 35 % and the third contains 80 % . He wants to use all three solutions to obtain a mixture of 40 liters containing 55 % acid, using 2 times as much of the 80 % solution as the 35 % solution. How many liters of each solution should be used?