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A 100 watt bulb is burnt everyday for 15 hours. What will be the cost of consumption in 30 days at the rate of 50 paise/unit?
- a)Rs. 45
- b)Rs. 22.50
- c)Rs. 15
- d)Rs. 24,50
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
A 100 watt bulb is burnt everyday for 15 hours. What will be the cost ...
the total energy consumed in 30 days=100×15×30=45000 W
unit of electricity is calculated in kW.
∴total energy consumed=45 kW
the total cost of consumption= total energy consumed ×rate per unit=45×.5= Rs. 22.5
Most Upvoted Answer
A 100 watt bulb is burnt everyday for 15 hours. What will be the cost ...
To calculate the cost of consumption for a 100 watt bulb burnt for 15 hours per day for 30 days at the rate of 50 paise per unit, we need to follow the steps below:
Step 1: Calculate the total energy consumed by the bulb in kilowatt-hours (kWh)
- The bulb is burnt for 15 hours per day, so the energy consumed per day is (100 watts * 15 hours) / 1000 = 1.5 kWh.
- Since there are 30 days in a month, the total energy consumed in 30 days is 1.5 kWh * 30 = 45 kWh.
Step 2: Calculate the cost of consumption
- The rate is given as 50 paise per unit, which means 1 kWh costs 50 paise.
- So, the cost of consuming 45 kWh is 45 kWh * 50 paise = 2250 paise.
Step 3: Convert the cost to rupees
- Since 100 paise make 1 rupee, the cost in rupees is 2250 paise / 100 = Rs. 22.50.
Therefore, the cost of consumption for a 100 watt bulb burnt for 15 hours per day for 30 days at the rate of 50 paise per unit is Rs. 22.50 (option B).
Let's summarize the solution:
Summary:
- Energy consumed per day: 1.5 kWh
- Total energy consumed in 30 days: 45 kWh
- Cost of consuming 45 kWh at the rate of 50 paise per unit: Rs. 22.50
Step 1: Calculate the total energy consumed by the bulb in kilowatt-hours (kWh)
- The bulb is burnt for 15 hours per day, so the energy consumed per day is (100 watts * 15 hours) / 1000 = 1.5 kWh.
- Since there are 30 days in a month, the total energy consumed in 30 days is 1.5 kWh * 30 = 45 kWh.
Step 2: Calculate the cost of consumption
- The rate is given as 50 paise per unit, which means 1 kWh costs 50 paise.
- So, the cost of consuming 45 kWh is 45 kWh * 50 paise = 2250 paise.
Step 3: Convert the cost to rupees
- Since 100 paise make 1 rupee, the cost in rupees is 2250 paise / 100 = Rs. 22.50.
Therefore, the cost of consumption for a 100 watt bulb burnt for 15 hours per day for 30 days at the rate of 50 paise per unit is Rs. 22.50 (option B).
Let's summarize the solution:
Summary:
- Energy consumed per day: 1.5 kWh
- Total energy consumed in 30 days: 45 kWh
- Cost of consuming 45 kWh at the rate of 50 paise per unit: Rs. 22.50
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A 100 watt bulb is burnt everyday for 15 hours. What will be the cost of consumption in 30 days at the rate of 50 paise/unit?a)Rs. 45b)Rs. 22.50c)Rs. 15d)Rs. 24,50Correct answer is option 'B'. Can you explain this answer?
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