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Explanation:

In 1994-95, the power consumed by various sectors out of 7875 megawatts can be given as follows.

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Since there was a 10% decrease in domestic consumption of power in 1994-95, the domestic consumption in 1991-92 = $\left(\frac{1575}{0.9}\right)$ = 1750 megawatts.

But this constitutes 20% of total power consumed in 1991-92 and the rural consumption constitutes 15% of total power in 1991-92. Hence, in 1991-92 the rural consumption = (1750 × $\frac{15}{20}$) = 1312 megawatts.