Im stuck on a question and I need help finding the right formula for series a ckt.

Find R1, R2 and It

R1= unknown

R2= unknown

R3= 50 ohms

It(current total)= unknown

Voltage total = 9v

VR1 (v-drop)= 4v

VR2=3v

VR3=2v

Which formula do I use:

V= I x R

R= V/I

I=V/R

V-Division

or I-Division?

Find R1, R2 and It

R1= unknown

R2= unknown

R3= 50 ohms

It(current total)= unknown

Voltage total = 9v

VR1 (v-drop)= 4v

VR2=3v

VR3=2v

Which formula do I use:

V= I x R

R= V/I

I=V/R

V-Division

or I-Division?

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