The 3.0 -diameter water line in the figure splits into two 1.0 -diameter pipes. All pipes are circular and at the same elevation. At point A, the water speed is 2.0 and the gauge pressure is 50 .What is the gauge pressure at point B?

I know we have to find P in kPa, but am unsure how to set this problem up or what to plug in where. Any help would be great