Answer
931
Work Step by Step
1024 children had rickets, 93 of these are living in urban areas.
The others are children having rickets, and living in nonurban areas. That is $1024-93=931$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 6 - Section 6.2 - Cardinality - Exercises - Page 417: 53a
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