Basic College Mathematics (9th Edition)

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

Chapter 1 - Whole Numbers - 1.10 Solving Application Problems - 1.10 Exercises - Page 96: 29

Answer

The approximate total cost is \$24,000. The exact total cost is \$20,961.

Work Step by Step

Estimate the cost to purchase 6 wheelchairs by rounding the cost per wheelchair then multiplying by 6. $1256 \approx 1000$ $1000 \times 6 = 6000$ Estimate the cost to purchase 15 recorder-players by rounding the cost per recorder-player, rounding the number needed, then multiplying the two numbers. $895 \approx 900$ $15 \approx 20$ $900\times 20 = 18,000$ Find the total approximate cost by adding together the approximate cost for wheelchairs and the approximate cost for recorder-players. 6,000 + 18,000 = 24,000 Find the exact cost to purchase 6 wheelchairs by multiplying the cost per wheelchair by 6. $1,256 \times 6 = 7,536$ Find the exact cost to purchase 15 recorder-players by multiplying the cost per recorder-player by 15 $895 \times 15 = 13,425$ Find the total cost by adding together the cost for wheelchairs and the cost for recorder-players. 7,536 + 13,425 = 20,961
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