00:01
Hello students here is a given question and the question says a business uses 2 kilowatt fire for an average of 20 hours each per week okay means the power is given use 2 kilowatt fire means there are 2 fire okay there are 2 fire okay there are 2 fires okay and the power is equal to the 1 fire this is equal to the 3 kilowatt that means this will be 3 ,000 watt okay let's see this is a 3 kilowatt okay now for 2 for 2 this will become 6 kilowatt okay the time the time is per week is equal to 20 hours per week is given okay and six and six six one fifty watt per okay lights okay this is for 30 hour per week is given okay now we have to find out the cost of electricity so that here this is the total kilowatt for this okay this is for fire and what is the total what is the strip multiplies by 150 that means this will be equal to 900 watt or we can say this is the 0 .9 kilowatt.
01:43
Okay, this is the total kilowattststs hours per week and this is 20 hours per week.
01:50
Then we have to find out the electricity.
01:52
Okay.
01:52
And here is given that is cost of electricity.
01:55
One unit.
01:57
One unit means this is the one kws is equal to the one unit.
02:01
And the price for this, this is the 7 rupees, okay? now, first, let's calculate the energy consumed, okay? energy consumed by, by this, okay? by fire, okay, by fire.
02:22
This is not first, this is fire.
02:26
Okay, what? this is the energy, e1 is equal to, we know that the power into time, okay? then e1 will be equal to what is the power that is 6 kilowatt, 6 kilowat, multiply by the r is equal to 20...