Please explain this question in detail.

In parallel RLC circuit the applied voltage remains the same across all components and the supply current gets divided.

The total current drawn from the supply is not equal to mathematical sum of the current flowing in the individual component, but it is equal to its vector sum of all the currents, as the current flowing in resistor, inductor and capacitor are not in the same phase with each other; so they cannot be added arithmetically.
$$\begin{gathered} Let \\ {I}_R is the current flowing in the resistor, R in amps. \\ I_C is the current flowing in the capacitor, C in amps. \\ I_L is the current flowing in the inductor, L in amps. \\ {I}_s is the supply current in amps. \\ {I}_S =\sqrt{{\left(I_R\right)}^2+{\left(I_L-I_c\right)}^2} \\ {I}_S =\sqrt{{\left(0.3\right)}^2+{\left(0.8-0.4\right)}^2} \\ {I}_S =\sqrt{0.09+0.16} =\sqrt{0.25} =0.5A \end{gathered}$$
Regards