i've got a bunch of voltage in parallel circuits problems that i'm having severe trouble with. i can't do a picture so i'll try to describe one as best as possible. i don't need all the answers, but just one so i can figure out what i'm doing wrong.

Et= ?V

resistance figures are left to right

1. 100k ohms

2. 50k ohms

3. 25k ohms

4. 25k ohms

and amps measured on top between R1 and R2 of 10mA.

I was trying to get total resistance and coming away with 9.09k.

then that times 10mA = 9.09 which i know is wrong. where am i going wrong here??

Any help is greatly appreciated!!