Transformer Questions

A $220\text{-volt}$ input is supplied to a transformer. The output circuit draws a current of $2.0\text{ ampere}$ at $440\text{ volts}$. If the efficiency of the transformer is $80\%$, the current drawn by the primary windings of the transformer is:

A transformer having efficiency of $90\%$ is working on $200\text{V}$ and $3\text{kW}$ power supply. If the current in the secondary coil is $6\text{A}$, the voltage across the secondary coil and the current in the primary coil respectively are: