Basic College Mathematics (9th Edition)

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

Chapter 2 - Multiplying and Dividing Fractions - Test: 25

Answer

estimated 36 grams exact : 30$\frac{5}{8}$ grams

Work Step by Step

Step 1: Read the problem. The problem asks for the grams that can be synthesized in 12$\frac{1}{4}$ days Step 2 Work out a plan. Multiply the 2$\frac{1}{2}$ grams per day and grams can be synthesized in 12$\frac{1}{4}$ days. Step 3 Estimate a reasonable answer. Round 2$\frac{1}{2}$ grams to 3 grams and 12$\frac{1}{4}$ days to 12 days Multiply 3 grams by 12 days = 36 grams. Step 4 Solve the problem. Find the exact answer 2$\frac{1}{2}$ * 12$\frac{1}{4}$ Convert mixed fractions into improper fractions $\frac{5}{2}$ * $\frac{49}{4}$ = $\frac{245}{8}$ = 30$\frac{5}{8}$ grams Step 5 State the answer. 30$\frac{5}{8}$ grams can be synthesized in 12$\frac{1}{4}$ days Step 6 Check. The exact answer, 30$\frac{5}{8}$ grams , is close to our estimate of 36 grams.
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.