Respuesta :
Answer:
12 gallons of gas
Step-by-step explanation:
20% full = 3 gallons
20 x 4 = 80%
3 x 4 = 12 gallons
A percentage is a way to describe a part of a whole. The gallons of gas that 80% filled gas tank will have is 12 gallons.
What are Percentages?
A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.
To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.
Let the total capacity of the tank to hold gas be represented by x.
Given that When my car's gas tank is 80% empty, it contains 3 gallons of gas. Therefore, we can also say that when the tank is 20% filled it has 3 gallons of gas.
Now, 20% gas is equal to 3 gallons in the form of equation can be written as,
20% of x = 3
(20/100) × x = 3
x = (3 × 100)/20
x = 15
Now, the gallons of gas that 80% filled gas tank will have is,
80% of total capacity
= (80/100) × x
= (80/100) × 15
= 12 gallons
Hence, the gallons of gas that 80% filled gas tank will have is 12 gallons.
Learn more about Percentages here:
https://brainly.com/question/6972121
#SPJ2
