If gas is 3.80 a gallon my ride gets 15 mpg and i have to travel 2000 miles how much money will i spent?
You'll spend approximately $506.65. To find the exact number of gallons used for the 2000 miles, we'll divide 2000 miles by 15 miles to get 133.33 gallons. Since you spend 3.80 on gallon, for 133.33 gallons, it will be 133.33*3.80, which is $506.65.
Around $500 that's going to starve your wallet.
15mi / 1 gal = 2000 mi / x gal. Cross mult and see how many gal you need for the trip. Mult by $3.80