RMS Current Help: What is the Primary Coil's Current in a Transformer?

[BuBbLeS01]

RMS Current...HeLp!

Homework Statement

The primary coil of a transformer is connected to a 130 V/60 Hz wall outlet. The secondary coil is connected to a lamp that dissipates 64 W. What is the rms current in the primary coil?

Homework Equations

The Attempt at a Solution

I = P/V
but I don't have P for the primary

 

[rock.freak667]

If the transformer is ideal then the power output is the same as the power input.

 

[BuBbLeS01]

So it is 64W??