Question

Stan lawn mower had 1/8 of a gallon of gasoline in the tank. Stan started mowing and used all of the gasoline. He put 6/10 of a gallon of gasoline in the tank. After he mowed 1/4 of a gallon was left in the tank. What was the total amount of gasoline stan used?

Answer 1

Answer: Stan used $\frac{1}{24}\ gallon$ of gasoline.

Step-by-step explanation:

Given: The amount of gasoline in the tank of Stan lawn mower=$\frac{1}{8}\ of\ gallon$

Then he put the amount of gasoline in the tank=$\frac{1}{6}\ of\ gallon$

The total  amount of gasoline filled in the tank =$\frac{1}{8}+\frac{1}{6}\ gallons$

⇒ The total amount of gasoline filled in the tank =$\frac{3+4}{24}=\frac{7}{24}\ gallons$

The amount of gasoline left in the tank after mowing=$\frac{1}{4}\ of\ gallon$

Now, the total gasoline used by Stan=$\frac{7}{24}-\frac{1}{4}=\frac{7-6}{24}=\frac{1}{24}\ gallon$