mark is riding on plane that can fly 490 miles with a tailwind of 35 mph im the same amount of time it can fly 340 miles against a headwind of 25 mph what is the speed of the plane ?

Respuesta :

Answer:

135

Step-by-step explanation:

this is going to be in miles per hour. ... of 20 mph in the same time that it can fly 350 miles against a tailwind of 20 mph.

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