Anthony T. answered • 05/07/21

Patient Math & Science Tutor

The time of travel with the wind is given by 2500 / (V_{plane} + V_{wind} ) = 5 hours

The time of travel against the wind is 2500 (V_{plane} - V_{wind} ) = 7.5 hours

You now have two equations with two unknowns, so you can solve them simultaneously.

I will let you do the heavy work.