# Chapter 1 - Section 1.7 - Addition and Subtraction of Fractions - Exercise - Page 40: 53

1$\frac{1}{2}$ gal

#### Work Step by Step

Let pilot flies to an island off the coast of North Carolina uses 25$\frac{1}{4}$ gal of fuel, it use 23$\frac{3}{4}$ gal of fuel in return trip. Therefore difference in the fuel used= 25$\frac{1}{4}$ gal - 23$\frac{3}{4}$ gal = $\frac{101}{4}$ - $\frac{95}{4}$ =$\frac{6}{4}$ =$\frac{3}{2}$ =1$\frac{1}{2}$ gal

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