Solve the problem.
-When 15 gallons of gasoline are put into a car's tank, the indicator goes from $\frac { 1 } { 8 }$ of a tank to $\frac { 3 } { 4 }$. What is the total capacity of the gasoline tank?
A) 36 gallons
B) 18 gallons
C) 30 gallons
D) 24 gallons

Question

Quizplus · Accepted Answer

The difference in the tank's level from $\frac{1}{8}$ to $\frac{3}{4}$ is $\frac{3}{4} - \frac{1}{8} = \frac{6}{8} - \frac{1}{8} = \frac{5}{8}$. This means that 15 gallons fill $\frac{5}{8}$ of the tank. To find the total capacity, we calculate $\frac{15}{\frac{5}{8}} = 15 \times \frac{8}{5} = 3 \times 8 = 24$ gallons.

Solve the Problem 18\frac { 1 } { 8 }81​ Of a Tank To

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