Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapter 5 - Ratio and Proportion - 5.5 Solving Application Problems with Proportions - 5.5 Exercises - Page 366: 37

Answer

5610 students would be expected to use cream.

Work Step by Step

Find the total number of coffee drinkers, then determine how many of those add cream. $\frac{4\ coffee\ drinkers}{5\ students} = \frac{x\ coffee\ drinkers}{56,100 students}$ $5x = 4\times56,100$ $\frac{5x}{5} = \frac{224,400}{5}$ $x = 44,880$ coffee drinkers $\frac{1\ cream\ user}{8\ coffee\ drinkers} = \frac{x\ cream\ users}{44880\ coffee\ drinkers}$ $8x = 1\times44880$ $\frac{8x}{8} = \frac{44880}{8}$ $x = 5610$ cream users
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