Thank you for adding your work. That lets us help you figure out where you went wrong.
In this case, your calculation of the overall resistance is correct, but unfortunately, this doesn't help you find the total voltage and total current. The 1 A current that's given is not the current through the entire circuit, but rather only the current through the 1 Ω resistor.
Therefore, start with what you do know, and work up from there.
There's 1 A of current flowing through the 1 Ω resistor. Ohm's Law tells you what the voltage across that resistor must be.
The 2 Ω resistor is in parallel with the 1 Ω resistor; therefore, it has the same voltage across it. What does Ohm's Law tell you about the current flowing through it?
The total of those two currents must be flowing through the 3 Ω resistor. And so forth, and so on ...