A) CheatingHow's this ?
As it is the only unknown, it is fine.****....
I figured it to be an ammeter. Was in a hurry though.
Now when u said it it was a current source.
Thanks for pointing it out. hope OP wasn't disappointing.
As thatoneguy has already mentioned, the 20V source is not in parallel with the 14 ohm resistor because of the 1.5 ohm resistor inbetween them.the 20V source and 14 ohm resistor are in parellel with each other