How do I find the resistance in a series/parallel circuit when only the current and voltage is given

I am in Physics this year and i am trying to calculate the resistance with current and voltage. How do I do it?

If the voltage and current are the total circuit voltage and current, then:
Resistance = voltage/ current will give an overall equivalent resistance figure (Ohm's law).
Then you need to figure currents and voltages across/ through the individual resistance figures, if you need to.
You would have done better if you had actually placed the question you were working on here, to get a more precise answer.

There is a straightforward mathematical relationship between capacity (volts), flow(amps) , power (watts) and resistance to flow (ohms). Your textbooks will give you the formulae. Just look it up and apply them to your problem. Simples.

V = IR and if you never seen or heard of it, drop the course. You have no business being in it.