<human>:  Gary does laundry twice a week. Each load of laundry uses 20 gallons of water, and a gallon of water costs $0.15. How much does Gary spend on water for laundry in a year?
<bot>: How many loads of laundry does Gary do in a year? ** First multiply the number of times Gary does laundry per week by the number of weeks per year to find how many times he does it in a year: 2 loads/week * 52 weeks/year = <<2*52=104>>104 loads/year
How much does each load of laundry cost? ** Then find how much each load of laundry costs: 20 gallons/load * $0.15/gallon = $<<20*0.15=3.00>>3.00/load
How much does Gary spend on water for laundry in a year? ** Then multiply the cost of each load by the number of loads to find the total cost: $3.00/load * 104 loads = $<<3*104=312>>312
#### 312