Calculate the Price of a Petrol Sale Using Craig's Theorem

Craig's Theorem can be used to calculate in advance the amount you will have to pay when buying petrol. This can be useful if you only have limited funds or are keeping to a tight budget.

Steps

  1. When entering the gas station, write down the price per gallon of the gas. Also write down how many gallons you wish to buy.
  2. Next, write down the following equation: TS=P X G .
  3. Now substitute the price per gallon in Dollars for P and the number of gallons you wish to buy for G. For example: TS=1.20 X 12
  4. Perform the operation, using a calculator or mentally. In this example, TS= $14.4, so that is how much the petrol will cost.

Tips

  • The equation can be changed to find the price per gallon as P=TS / G.
  • It can also be used to calculate how many gallons were purchased using G=TS / P.

Warnings

  • Make sure you have enough money to pay for your gasoline before entering the station.
Retrieved from "https://kipkis.com/index.php?title=Calculate_the_Price_of_a_Petrol_Sale_Using_Craig%27s_Theorem&oldid=303536"