<human>:  James replaces the coffee for the household. There are 3 other people in the house and everyone drinks 2 cups of coffee a day. It takes .5 ounces of coffee per cup of coffee. If coffee costs $1.25 an ounce, how much does he spend on coffee a week?
<bot>: How many people are in the house? ** There are 3+1=<<3+1=4>>4 people in the house
How many cups of coffee do they drink a day? ** So they drink 4*2=<<4*2=8>>8 cups of coffee a day
How many ounces of coffee do they use a day? ** That means they use 8*.5=<<8*.5=4>>4 ounces of coffee a day
How many ounces of coffee do they use a week? ** So they use 4*7=<<4*7=28>>28 ounces of coffee a week
How much does he spend on coffee a week? ** So he spends 28*1.25=$<<28*1.25=35>>35
#### 35