OpenStax, Elementary Algebra 2e §8.9 Use Direct and Inverse Variation · Review Exercise 136 · Algebra · Rational expressions
Use Direct and Inverse Variation · Review Exercise 136
Solve.
Mark is riding on a plane that can fly 490 miles with a headwind of 20 mph in the same time that it can fly 350 miles against a tailwind of 20 mph. What is the speed of the plane?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Elementary Algebra 2e · §8.9 Use Direct and Inverse Variation · Review Exercise 136
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