Solve. -A Plane Flies 420 Miles with the Wind and 350

question 32

Multiple Choice

Solve.
-A plane flies 420 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 21 mph, what is the speed of the plane in still air?

• A) 256 mph
• B) 236 mph
• C) 231 mph
• D) 221 mph

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Definitions:

Ten-Speed

A transmission with ten gear ratios, offering a wide range of speeds and improved fuel efficiency.

Twin-Countershaft Transmission

A type of manual transmission design in heavy-duty trucks that features two parallel countershafts to increase torque and load capacity.

Timed

Pertaining to an event or action that is measured, controlled, or scheduled to occur at a specific time or interval.

Range Valve

A valve used in pneumatic or hydraulic systems to control the range of operation of a connected device.