These are worked out on a pro-rata basis as they only send one bill every 6 months. The last water bill you were invoiced $8.27 for 25 days water usage from the 11/07/2010 to 05/08/2010 which equals .33cents a day usage. You vacated on the 31st January so basically owe 179 days of water. 179 x .33cents = $59.07 or $60.00.
Gas Consumption – This is also worked out on a pro-rata basis. The last gas bill you received was for $24.68 and paid from the 03/09/2010 – 26/11/2010 which is 84 days and equals .29 cents per day usage. You vacated on the 31st January so you owe 66 days of gas usage. 66 x .29cents = $19.14 or $20.00.
煤气费是按9月份到11月的日均费用来计算...问题同上