A Plane Can Fly 180 Mph in Calm Air

question 59

Multiple Choice

A plane can fly 180 mph in calm air. Flying with the wind, the plane can fly 780 mi in the same amount of time it takes to fly 660 mi against the wind. Find the rate of the wind.

• A) 20 mph
• B) 18 mph
• C) 15 mph
• D) 17 mph
• E) 23 mph

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Definitions:

Accumulated Value

In computing and data processing, this term refers to a total that increases over time as more data or units are added.

Preset Value

A predefined or user-set value that determines when a certain action should be taken or when a specific condition is met within a system.

Timed Contact

"A normally open and/or normally closed contact that is actuated at the end of a timer’s time-delay period."