How to calculate the resistance in a combined circuit

[Daniel2244]

Homework Statement

Work out the total resistance of a combined circuit.
https://gyazo.com/935b96ff63689e2bff852f29ea48bf90 - picture of circuit layout

Homework Equations

Rt=R1+R2+Rn...
R=V/I
1/RT=1/R1+1/R2+1/Rn...

The Attempt at a Solution

RT=R1+R2 =100+150=250Ω for the resistors in series.
1/RT=1/R1+1/R2 = 1/RT=1/250Ω+1/200=9x10^-3 RT=1/9x10^-3=111.1Ω
I added the resistors in series to make it a parallel circuit.

 

[TSny]

Looks good.

 

[gneill]

Your calculations look fine.

 

[Daniel2244]

Looks good.

Thanks

 

[Daniel2244]

Your calculations look fine.

Thanks