Electrical energy

A man has three 100W bulbs, five 60W and five 40W light bulbs in his apartment. If he turn all the light for 5hrs daily and the cost of electricity is 1.20$ per unit. Calculate his bill for 30 days?
Question asked by: Adetayo100

Asked on: 16 Feb 2011

800W*5hrs/1000
=4Units*1.20$
=4.8$
4.8$*30days
=144$
By: shay310
Replied at: 06 Mar 2011
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