the powe of the air conditioner is 2500W and there are 3 air-con.
calculate the total cost of running all the air-conditioners for 100 hours.
the unit cost of electricity is $0.86 for first 400 units, $0.90 for the next 600 units and $1.00 for the next 800 units. (show the calculations.)
thx:)!
電費計算香港家庭,
2010-02-22 3:11 am
回答 (1)
2010-02-22 3:17 am
✔ 最佳答案
E=Pt=2500(3)(100)
=750000Wh
=750kWh
cost of electricity=0.86*400+0.9*(750-400)
=$659
參考: myself
收錄日期: 2021-04-23 18:24:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100221000051KK01449