A round trip from Seattle, Washington, to Orlando, Florida, is one of the longest flight paths in the continental United states. The jet stream that blows from west to east affects the flight's average speed. A plane flying nonstop from Seattle to Orlando can fly at an average of 523 miles per hour. The same plane flying from Orlando to Seattle travels at an average speed of 415 miles per hour. The full round trip takes exactly 11 hours. To the nearest mile, how far is Seattle from Orlando?

-6 is the correct option from the above given options

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54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.