Easy# Currents in Multi-Loop Circuits

EANDM-ALPY3M

Consider the circuit in the accompanying diagram. Two resistors are connected to a battery which has a voltage $V$. There is a current of$1\,A$ flowing through the $5\Omega$ resistor in the right leg.

What is the voltage $V$ on the battery, and what is the value of the current $I_{left} $ flowing through the $10\Omega$ resistor in the left leg?