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MATH / Melanie ran at 5 m/s for 400 meters, then ran at 4 m/s for the next 800 meters, and finally ran at 8 m/s for the final 400 meters. What was her average speed, in meters per second,…

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problem

Melanie ran at 55 m/s for 400400 meters, then ran at 44 m/s for the next 800800 meters, and finally ran at 88 m/s for the final 400400 meters. What was her average speed, in meters per second, for the 16001600 meter run? Express your answer as an improper fraction.
Plain-text mathematical notation (without MathML)
Melanie ran at 5 m/s for 400 meters, then ran at 4 m/s for the next 800 meters, and finally ran at 8 m/s for the final 400 meters. What was her average speed, in meters per second, for the 1600 meter run?  Express your answer as an improper fraction.
Original LaTeX notation
Melanie ran at $5$ m/s for $400$ meters, then ran at $4$ m/s for the next $800$ meters, and finally ran at $8$ m/s for the final $400$ meters. What was her average speed, in meters per second, for the $1600$ meter run?  Express your answer as an improper fraction.

level

Level 4

type

Algebra

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