## Elementary Technical Mathematics

Published by Brooks Cole

# Chapter 1 - Section 1.7 - Addition and Subtraction of Fractions - Exercise - Page 40: 54

#### Answer

13$\frac{1}{8}$ qt

#### Work Step by Step

Given oil quantites are 4$\frac{1}{2}$ qt, 4$\frac{1}{4}$ qt and 4$\frac{3}{8}$ qt Therefore total oil used = 4$\frac{1}{2}$ qt + 4$\frac{1}{4}$ qt + 4$\frac{3}{8}$ qt =$\frac{9}{2}$ qt + $\frac{17}{4}$ qt + $\frac{35}{8}$ qt =$\frac{9}{2} \times$ $\frac{4}{4}$+ $\frac{17}{4} \times$ $\frac{2}{2}$ + $\frac{35}{8}$ qt =$\frac{36}{8}$ qt + $\frac{34}{8}$ qt + $\frac{35}{8}$ qt =$\frac{105}{8}$ qt =13$\frac{1}{8}$ qt

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