Post a New Question


posted by on .

A plane can fly 140 mph in calm air. Flying with the wind, the plane can fly 700 mi in the same amount of time it takes to fly 420 mi against the wind. Whats the rate of the wind?

  • Math - ,

    Let V be the wind speed. The flight time is D/(140+V)with a tail wind and
    D/(140-V) with a head wind.

    Solve 700/(140+V) = 400/(140-V)
    98,000 -700V = 56,000 +400V
    1100V = 42,000
    V = 38.2 km/h

  • Math - ,


Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question