Calculating flow through parallel pipes

[kollarjd]

Homework Statement

I am trying to calculate the flow through two parallel pipes. From an 8in line, a 1in line T's off and then joins back together downstream.

How do I go about solving a problem like this? The delta P should be equal for both streams so the flow should be determined by the resistance in the pipe, correct? I am having trouble calculating the resistance in the pipe...

Homework Equations

The Attempt at a Solution

 

[umdupas2]

Flow (Q) is the velocity times the area.

Since you have the diameter of the pipe you can find the cross-sectional area then all you need is the velocity.

With what you've given so far I don't see a way to calculate the velocity. Are you leaving something out.?