Answer
625 stocks went up.
Work Step by Step
$\frac{5\ up}{6\ down} = \frac{x\ up}{750 down}$
$6x = 5\times750$
$\frac{6x}{6} = \frac{3750}{6}$
$x = 625$
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0134467795
ISBN 13:
978-0-13446-779-5
Chapter 5 - Ratio and Proportion - 5.5 Solving Application Problems with Proportions - 5.5 Exercises - Page 365: 27
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