Question: The label on a washing machine indicates that the washer will use $85 worth of hot water if the water is heated by a 90

The label on a washing machine indicates that the washer will use $85 worth of hot water if the water is heated by a 90 percent efficient electric heater at an electricity rate of $0.09/kWh. If the water is heated from 18 to 45°C, the amount of hot water an average family uses per year is
(a) 11.6 tons
(b) 15.8 tons
(c) 27.1 tons
(d) 30.1 tons
(e) 33.5 tons

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