Toms car gets 50 miles to the gallon.  He drives 75 miles per day.  If gas is $3 per gallon how much does he spend on gas in 10 days?
He drives 75*10=<<75*10=750>>750 miles
So he uses 750/50=<<750/50=15>>15 gallons
That means he spends 15*3=$<<15*3=45>>45 on gas
#### 45