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Flying into that same 30 mph wind, the same plane's ground speed would be:
A180 mph
B150 mph
C90 mph
D120 mph
Answer & Solution
Correct answer: D. 120 mph
1. A headwind cuts the plane's own speed.
2. 150 minus 30 gives the answer.
3. The ground speed is 120 mph.
_Source: OpenStax Elementary Algebra, Chapter 8, Solve Uniform Motion and Work Applications._
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