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Q: Now calculate how much gasoline you will need If your car gets 25 miles per gallon mpg divide the mileage 642 by the mpg to get the number of gallons needed to make the trip?

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Divide the number of miles travelled by the number of gallons of gasoline used.

You measure the length, width and height of tank, multilply them together, then divide by number of gallons in cubic ft.

Fill the fuel tank to the top and record the mileage. The next time you fill up record the mileage and number of gallons. Now divide the number of gallons into the number of miles driven since last fill up and you will have the mpg.

As in gas mileage. you take how many miles you can drive on a full tank and divide it by how much your gas tank can hold in gallons and then it should give you your miles per gallon.

Divide 360 by 12, then multiply by 4

The next time you fill up record the mileage. The next time after that record the mileage and the gallons it took to fill up. Then divide the mileage by the gallons and the answer will be the miles per gallon of that vehicle.

0.0389

Calculate the distance. Calculate your mpg. Divide mpg into distance

Divide mileage by miles per gallon to determine how many gallons were used, then multiply by cost per gallon to calculate total cost of gas.: 3168/20 = 158.4 gal x 3.00 = $475.20.

Fill up your tank with gas and mark down your mileage, drive until you need gas again and fill up. Mark down your mileage along with how many gallons you put in. Subtract the latest mileage from the first mileage you wrote down and then divide the gallons put in.

Just write down the mileage when you fill up your car and drive until you need gas again. Note the mileage at that fill-up, subtract from the previous mileage and divide by the gallons of gas to fill up.

1.35 per gallon. Divide $21.60 by 16 gallons to get the price per gallon.

There are too many variables to really give a solid answer. * What route are you taking? * What gas mileage does your car get? * How will the gas mileage vary based on temperatures, altitude and various speeds? * What is the price of gasoline at all the different gas stations? You can get a general idea by taking the mileage, divide it by the MPG your vehicle gets and multiplying it by the average cost of gasoline. The distance is about 1740 miles. If you get 20 mpg it will take 87 gallons of gas. If it is $4 a gallon that would be $348 worth of gasoline.

A basic simple way of calculating mileage is taking a look at the number of miles you have driven your car and divide it with the number of gallons your car consumed to travel that long.

It varies from car to car and driver to driver. The next time you fill up, record the mileage. The next time you fill up again, record the mileage and the gallons it took to fill it up. Subtract the the first mileage reading from the second reading and you have the total miles driven. Now take the number of gallons used and divide them into the total miles driven between fill ups and you will have the miles per gallon (mpg) the vehicle gets with you driving.

Write down your mileage when you fill up your tank and how many gallons of gas. On the next fillup write that mileage down and subtract it from the first number. Divide that number from the number of gallons you put in. This will give you your MPG.

-- Multiply (length x width x height) in inches; divide the answer by 231 to get gallons. OR -- Multiply (length x width x height) in feet; divide the answer by 7.481 to get gallons.

Gallons to quarts is divide were as Quarts to Gallons is multiply.

All engines are different. The wear the engine has(mileage), the air intake(air filter), and the restrictions from the exhaust (size of pipes coming from the engine). All three have an impact on fuel comsumption. The best way to calculate fuel consumption is to run the vehicle low on fuel. Log how many gallons of fuel you replace into the tank. Log the mileage when fueling. Drive the vehicle low on fuel again, refuel the vehicle. Log the mileage again at refueling and log the gallons it takes to fill the tank. The difference between the mileage is the total number of miles on a tank of gas. The gallons it takes to refill the tank is the number of gallons consumed. Divide the sum of miles driven by the gallons consumed. this equal miles per gallon.

Divide mileage (750) by miles per gallon (18) to determine how many gallons will be needed and then multiply by the cost of gas (4.12) to determine the cost for the trip: 750 ÷ 18 = 41.67 x 4.12 = $171.68

The answer depends entirely on your gas mileage. If you're riding a moped that makes 75mpg, you'll need about 6.5 gallons. If you're driving an American muscle car that makes 10mpg, you'll need 48.5 gallons. Divide 485 by your gas mileage to find how many gallons you'll need.

Usually you calculate a "unit rate" by dividing two numbers. In this case, if you divide the number of gallons by the number of months, you get a rate of "gallons per month". If you divide the other way round, you would get "months per gallon".

Depends on the fuel mileage of the vehicle you are driving. Divide the fuel mileage into 1200 and you will see how many gallons of fuel you will use each month. Example: 25 MPG. 1200 divided by 25 = 48 gallons of fuel required.

It varies with each vehicle. To determine the mpg (miles per gallon) your vehicle gets, fill your fuel tank to the top and record the mileage. The next time you need to refuel record the mileage again and amount of fuel it took to fill. Subtract the first mileage reading from the last one. Take that reading and divide the number of gallons it took to refill the tank and you have the mpg your vehicle gets.

Every time you fill up keep the receipt and write down the mileage. Add up the amount you spent and if you want to know your MPG you subtract the milage from one fill up to the other. Then divide it by the number of gallons you put in. This will give you MPG.