# Difference between revisions of "TADM2E 1.31"

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− | + | Assumptions: | |

− | + | : approx 400000 cars | |

− | each car needs to refuel once a week | + | : each car needs to refuel once a week |

− | each gas station is open 10 hours a day and refuels 10 cars an hour | + | : each gas station is open 10 hours a day and refuels 10 cars an hour |

− | + | : there are enough stations to refuel all cars once per week | |

Calculation: | Calculation: | ||

− | cars that can be fueled by 1 station in 1 week | + | : cars that can be fueled by 1 station in 1 week |

− | 10*10*7=700 | + | : 10*10*7=700 |

− | number of gas stations (rounded up): | + | : a number of gas stations (rounded up): |

− | ceil(400000/700)=572 | + | : ceil(400000/700)=572 |

− | + | ||

− | + | ||

---- | ---- | ||

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'''A slightly different approach''': | '''A slightly different approach''': | ||

− | * | + | * approx 300 mln cars in the US (1 car per each citizen). |

* each station is open 12hr a day, has 6 places for taking fuel, each fueling takes about 6 min | * each station is open 12hr a day, has 6 places for taking fuel, each fueling takes about 6 min | ||

− | + | * amount of cars using given gas station daily: <math>6 * 12 * \frac{60}{6} = 6 * 120 = 720 </math> | |

− | + | * gas station (at least in Europe) are used always used, so: <math>\frac{300 000 000}{720} \approx 333 000</math> gas stations. | |

− | + | ||

− | + |

## Revision as of 22:18, 3 January 2020

Assumptions:

- approx 400000 cars
- each car needs to refuel once a week
- each gas station is open 10 hours a day and refuels 10 cars an hour
- there are enough stations to refuel all cars once per week

Calculation:

- cars that can be fueled by 1 station in 1 week
- 10*10*7=700
- a number of gas stations (rounded up):
- ceil(400000/700)=572

**A slightly different approach**:

- approx 300 mln cars in the US (1 car per each citizen).
- each station is open 12hr a day, has 6 places for taking fuel, each fueling takes about 6 min
- amount of cars using given gas station daily: $ 6 * 12 * \frac{60}{6} = 6 * 120 = 720 $
- gas station (at least in Europe) are used always used, so: $ \frac{300 000 000}{720} \approx 333 000 $ gas stations.