Final answer:
When a 28-gallon gas tank is ¾ full, it contains 21 gallons of gasoline, calculated by multiplying the tank's total capacity by the fraction representing how full it is.
Step-by-step explanation:
If a gas tank can hold 28 gallons, then when it is ¾ full, it contains ¾ of 28 gallons. To find this out, simply multiply the total capacity of the tank (28 gallons) by the fraction that represents how full it is (¾).
Here is the step-by-step calculation:
- Write down the total capacity of the tank: 28 gallons.
- Write down the fraction that represents how full the tank is: ¾.
- Multiply these two numbers: 28 gallons × ¾ = 21 gallons.
Therefore, when the tank is ¾ full, it contains 21 gallons of gas.