Mathematics · Commercial Mathematics
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 total cost of energy consumption? Furthermore, if the desk light is left on for 2 more hours each night during these 180 days, what would be the percentage increase in the cost of energy consumption?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1₹720; 15%
- 2₹604.8; 12%
- 3₹504; 20%✓
- 4₹604.8; 10%
Correct answer
₹504; 20%
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