Gases and Pressure Question?

Container A in Figure 19-20 holds an ideal gas at a pressure of 4.5 105 Pa and a temperature of 340 K. It is connected by a thin tube to container B, with four times the volume of A. Container B holds the same ideal gas at a pressure of 1.0 105 Pa and a temperature of 400 K. The valve is opened to allow the pressures to equalize, but the temperature of each container is maintained. What then is the pressure in the two containers? (in Pascals)