human
John's car gets 30 mpg. He drives 20 miles to work each way 5 days a week. He also drives another 40 miles a week for leisure travel. How many gallons of gas does he use a week?
assistant
How many miles does John drive for work? ** He drives 20*2=<<20*2=40>>40 miles per day for work
How many miles does John drive for work? ** So he drives 40*5=<<40*5=200>>200 miles for work
How many miles does John drive in total? ** So he drives a total of 200+40=<<200+40=240>>240 miles per week
How many gallons of gas does John use a week? ** That means he uses 240/30=<<240/30=8>>8 gallons of gas a week
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