Answer :
Final answer:
The energy consumed by the electric bulbs in 30 days is 22.2 kWh.
Explanation:
To calculate the energy consumed by the electric bulbs in 30 days, we need to find the energy consumed by each bulb per day and then multiply it by 30. Let's start with the two 60 W bulbs. Each bulb consumes 60 W * 4 hours = 240 Wh (watt-hours) per day. Multiplying this by 30 gives us a total of 240 Wh * 30 = 7200 Wh for the two 60 W bulbs in 30 days.
Now, let's calculate the energy consumed by the three 100 W bulbs. Each bulb consumes 100 W * 5 hours = 500 Wh per day. Multiplying this by 30 gives us a total of 500 Wh * 30 = 15000 Wh for the three 100 W bulbs in 30 days.
To convert this energy consumption to kilowatt-hours (kWh), we divide the total energy in watt-hours by 1000. So, the total energy consumed in 30 days by the electric bulbs in the house is (7200 Wh + 15000 Wh) / 1000 = 22.2 kWh.
