R Circuit loops Kirchhoff's Rules

R circuit Assignment: You will analyze the following circuit. Consider each resistance to be accurate to 4 sig.figs.  R1=20.00, R2=30.00, R3=50.00, and R4=20.00. This is the first attempt at trying to do an assignment this way. You have unlimited retries. Please use it to learn the materials. I suggest you redraw the circuit and table on scratch paper to use as you work.

I suggest you make a table like this to keep track of your work.