Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - 2-2 Solving Two-Step Equations - Practice and Problem-Solving Exercises - Page 91: 23


16 boxes

Work Step by Step

(Let n be the number of boxes to be carried in the elevator. Multiply this times 50 since each box is 50 lbs. Add 160 since the delivery person is 160 lbs. The total weight is 1000lbs.) $50n+160=1000$ (To solve, subtract 160 from each side) $50n=840$ (Divide each side by 50) $n=16\frac{4}{5}$ (Since boxes cannot come in a fraction, the answer is simply 16)
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