Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 3 - Adding and Subtracting Fractions - Review Exercises - Page 256: 44


$Estimate: 54$ tons $Exact: \displaystyle 53\frac{5}{12}$ tons

Work Step by Step

We need to find the sum of the newspaper weights: $\displaystyle 28\frac{2}{3}+24\frac{3}{4}$ First, we estimate by rounding: $\displaystyle 28\frac{2}{3}+24\frac{3}{4}$ $\approx 29+25$ $\approx 54$ tons Next, we get the exact answer: $\displaystyle 28\frac{8}{12}+24\frac{9}{12}$ $=\displaystyle 52\frac{17}{12}$ $=\displaystyle 53\frac{5}{12}$ tons The exact result is fairly close to the estimate.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.