Question

calculate electricity bill

Answer 1

the electric bill is 336

Answer 2

Power usage of all Tubelights $= 40W \times 4 = 160W$

Duration of each Tubelight = 5 hours

∴ Energy in kWh $= \dfrac{160 \times 5}{1000} = 0.8 kWh$

Power usage of all Fans $= 120W \times 3 = 360W$

Duration of each Fan = 4 hours

∴ Energy in kWh $= \dfrac{360 \times 4}{1000} = 1.44 kWh$

∴ Total energy in kWh $= 0.8 + 1.44 = 2.24 kWh$

Rate per kWh = ₹5

∴ Total cost for one day $= Rate \times kWh$

$= 5 \times 2.24$

$= 11.2$ rupees

Number of days in September = 30 days

∴ Total cost for 30 days = cost of one day $\times$ no. of days

$= 11.2 \times 30$

$= 336$

The electricity bill for September is ₹336.

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