Answer
2 km
Work Step by Step
38-18=10 degree per km
the difference in temperature is 20 degree. it is $2\times10$ degrees so depth is 2 km.
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 2 - Solving Equations - 2-2 Solving Two-Step Equations - Practice and Problem-Solving Exercises - Page 93: 59
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