The full-scale range of the wattmeter shown in the circuit is $100 \mathrm{~W}$. The turns ratio of the individual transformers are indicated in the figure. The RMS value of the ac source voltage $\mathrm{V}_{\mathrm{s}}$ is $200 \mathrm{~V}$. The wattmeter reading will be____________$\mathrm{W}$ (rounded off to the nearest integer).
