If the problem does not specify which type of gallon, and you are a student in the United States, it is probably safe to assume that you are converting from US gallons. Outside of the United States, it is probably safe to assume that you are converting from the imperial gallon.
For example, if you are converting 24 miles per imperial gallon to liters per 100 km, you would calculate:L/100km=282. 4824{\displaystyle L/100{\text{km}}={\frac {282. 48}{24}}}L/100km=11. 77{\displaystyle L/100{\text{km}}=11. 77}So, 24 MPG (imperial) is equal to 11. 77 L/100km.
For example, if you are converting 24 miles per US gallon to liters per 100 km, you would calculate:L/100km=235. 2124{\displaystyle L/100{\text{km}}={\frac {235. 21}{24}}}L/100km=9. 8{\displaystyle L/100{\text{km}}=9. 8}So, 24 MPG (US) is equal to 9. 8 L/100km.
1 imperial gallon is equal to 4. 55 liters. [3] X Research source 1 U. S. gallon is equal to 3. 79 liters. [4] X Research source
For example, to convert 24 MPG, you would calculate:24mi1gallon×1. 609km1mi=38. 616km1gallon{\displaystyle {\frac {24{\text{mi}}}{1{\text{gallon}}}}\times {\frac {1. 609{\text{km}}}{1{\text{mi}}}}={\frac {38. 616{\text{km}}}{1{\text{gallon}}}}}
If you are working with imperial gallons, you will calculate: 38. 616km1gallon×1gallon4. 55liters=38. 616km4. 55liters{\displaystyle {\frac {38. 616{\text{km}}}{1{\text{gallon}}}}\times {\frac {1{\text{gallon}}}{4. 55{\text{liters}}}}={\frac {38. 616{\text{km}}}{4. 55{\text{liters}}}}}. Taking the reciprocal, you have 4. 55liters38. 616km{\displaystyle {\frac {4. 55{\text{liters}}}{38. 616{\text{km}}}}}. If you are working with US gallons, you will calculate: 38. 616km1gallon×1gallon3. 79liters=38. 616km3. 79liters{\displaystyle {\frac {38. 616{\text{km}}}{1{\text{gallon}}}}\times {\frac {1{\text{gallon}}}{3. 79{\text{liters}}}}={\frac {38. 616{\text{km}}}{3. 79{\text{liters}}}}}. Taking the reciprocal, you have 3. 79liters38. 616km{\displaystyle {\frac {3. 79{\text{liters}}}{38. 616{\text{km}}}}}.
For example, for imperial gallons, you would calculate 4. 55liters38. 616km=. 118liters per km{\displaystyle {\frac {4. 55{\text{liters}}}{38. 616{\text{km}}}}=. 118;{\text{liters per km}}}. For US gallons, you would calculate 3. 79liters38. 616km=. 098liters per km{\displaystyle {\frac {3. 79{\text{liters}}}{38. 616{\text{km}}}}=. 098;{\text{liters per km}}}.
For example, if the rate in imperial gallons is . 118liters per km{\displaystyle . 118;{\text{liters per km}}}, to calculate liters per 100 km, multiply . 118×100=11. 8liters per 100 km{\displaystyle . 118\times 100=11. 8;{\text{liters per 100 km}}}. If the rate in US gallons is . 098liters per km{\displaystyle . 098;{\text{liters per km}}}, to calculate liters per 100 km, multiply . 098×100=9. 8liters per 100 km{\displaystyle . 098\times 100=9. 8;{\text{liters per 100 km}}}.
For example, if calculating 20 L/100 km to mpg, you would calculate:mpg=282. 4820{\displaystyle {\text{mpg}}={\frac {282. 48}{20}}}mpg=14. 124{\displaystyle {\text{mpg}}=14. 124}.
For example, if calculating 20 L/100 km to mpg, you would calculate:mpg=235. 2120{\displaystyle {\text{mpg}}={\frac {235. 21}{20}}}mpg=11. 76{\displaystyle {\text{mpg}}=11. 76}.
First, convert the number of liters per 100 km to the number of liters per 1 km. If you were converting 20 liters per 100 km, you would first calculate 20liters100km=. 20liters1km{\displaystyle {\frac {20{\text{liters}}}{100{\text{km}}}}={\frac {. 20{\text{liters}}}{1{\text{km}}}}}. Second, convert liters per kilometer to liters per miles. There are . 62 miles in one kilometer. [10] X Research source So, to convert, you would calculate . 20liters1km×1km. 62mi=. 20liters. 62mi{\displaystyle {\frac {. 20{\text{liters}}}{1{\text{km}}}}\times {\frac {1{\text{km}}}{. 62{\text{mi}}}}={\frac {. 20{\text{liters}}}{. 62{\text{mi}}}}}. Third, convert the number of liters to the number of imperial gallons. There are . 22 imperial gallons in a liter. [11] X Research source To convert, you would calculate . 20liters. 62mi×. 22gallons1liters=. 044gallons. 62mi{\displaystyle {\frac {. 20{\text{liters}}}{. 62{\text{mi}}}}\times {\frac {. 22{\text{gallons}}}{1{\text{liters}}}}={\frac {. 044{\text{gallons}}}{. 62{\text{mi}}}}}. Fourth, since you want to find miles per gallon, take the reciprocal of the fraction:. 62mi. 044gallons{\displaystyle {\frac {. 62{\text{mi}}}{. 044{\text{gallons}}}}}. Last, find the number of miles per gallon by dividing the numerator and the denominator by the number of gallons:. 62mi. 044gallons=14. 1mpg{\displaystyle {\frac {. 62{\text{mi}}}{. 044{\text{gallons}}}}=14. 1;{\text{mpg}}}.
First convert the number of liters per 100 km to the number of liters per 1 km. If you were converting 20 liters per 100 km, you would first calculate 20liters100km=. 20liters1km{\displaystyle {\frac {20{\text{liters}}}{100{\text{km}}}}={\frac {. 20{\text{liters}}}{1{\text{km}}}}}. Second, convert liters per kilometer to liters per miles. There are . 62 miles in one kilometer. [12] X Research source So, to convert, you would calculate . 20liters1km×1km. 62mi=. 20liters. 62mi{\displaystyle {\frac {. 20{\text{liters}}}{1{\text{km}}}}\times {\frac {1{\text{km}}}{. 62{\text{mi}}}}={\frac {. 20{\text{liters}}}{. 62{\text{mi}}}}}. Third, convert the number of liters to the number of US gallons. There are . 26 US gallons in a liter. [13] X Research source To convert, you would calculate . 20liters. 62mi×. 26gallons1liters=. 052gallons. 62mi{\displaystyle {\frac {. 20{\text{liters}}}{. 62{\text{mi}}}}\times {\frac {. 26{\text{gallons}}}{1{\text{liters}}}}={\frac {. 052{\text{gallons}}}{. 62{\text{mi}}}}}. Fourth, since you want to find miles per gallon, take the reciprocal of the fraction:. 62mi. 052gallons{\displaystyle {\frac {. 62{\text{mi}}}{. 052{\text{gallons}}}}}. Last, find the number of miles per gallon by dividing the numerator and the denominator by the number of gallons:. 62mi. 052gallons=11. 92mpg{\displaystyle {\frac {. 62{\text{mi}}}{. 052{\text{gallons}}}}=11. 92;{\text{mpg}}}.
