The physics of a stereo, receiver and stereo speakers

For the purpose of this, ignore the left stereo, channel and focus on the right side, assume that the remote speaker and the main speaker connected to the receiver in parallel, and if the voltage across the speakers is 6.0 V. The main speakers resistance is 8.0 Q and the remote speaker resistant is 4.0 Q

a - equivalent resistance of the two speakers?
b- total current supplied by the receiver?
c- current in each speaker?
d- the power dissipated in each speaker?
e- total power delivered by the receiver to the two speakers