The numerical approximations are as follows:
\( A = 16 \frac{2}{3} \% = 16.6667\% = 0.166667 \), \( B = \frac{2}{15} \approx 0.1333 \), \( C = \mathbf{0.17} \), \( D = 0.25\% \text{ of } 64 = 0.25 \times \frac{64}{100} = 0.16 \).
So, the increasing order is \( B < D < A < C \).
An electricity utility company charges ₹7 per kWh. If a 40-watt desk light is left on for 10 hours each night for 180 days, what would be the cost of energy consumption? If the desk light is on for 2 more hours each night for the 180 days, what would be the percentage-increase in the cost of energy consumption?