Question

in a house of three bulbs of 25 Watt each are used for 5 hours a day. calculate the unit of electricity consumed in a month of 31 days also find the total expenditure if one unit of electricity cost 2.5 rupees
please explain step by step
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Answer 1

Answer:

Given, power of each bulb = 25 W, time = 5 h Cost of 1 unit of electricity = Rs 2.50 Electric energy consumed by 3 bulbs in a .day = Power x Time = 3 x 25 = 375Wh

Electricity consumed in 31 days = 375 x 31 = 11625 Wh

=11.625kWh = 11.625 units

Cost of Electricity consumed = 11.625 x 2.50 = Rs 29.06

Answer 2

Explanation:

Given, power of each bulb = 25 W, time = 5 h Cost of 1 unit of electricity = Rs 2.50 Electric energy consumed by 3 bulbs in a .day = Power x Time = 3 x 25 = 375Wh

Electricity consumed in 31 days = 375 x 31 = 11625 Wh

=11.625kWh = 11.625 units

Cost of Electricity consumed = 11.625 x 2.50 = Rs 29.06