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 15 to 55°C, the amount of hot water an average family uses per year is
(a) 10.5 tons
(b) 20.3 tons
(c) 18.3 tons
(d) 22.6 tons
(e) 24.8 tons

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